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KLGOLD.COM TSX: KL OTCQX: KLGDF May 2017 INVESTOR PRESENTATION TIER ONE GOLD PRODUCTION | DISTRICT SCALE EXPLORATION | VALUATION UPSIDE 1 KLGOLD.COM FORWARD LOOKING STATEMENTS TSX:KL Cautionary Note Regarding Forward-Looking


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SLIDE 1

May 2017

INVESTOR PRESENTATION

KLGOLD.COM TSX: KL OTCQX: KLGDF

TIER ONE GOLD PRODUCTION | DISTRICT SCALE EXPLORATION | VALUATION UPSIDE

1

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SLIDE 2

KLGOLD.COM TSX:KL

FORWARD LOOKING STATEMENTS

Cautionary Note Regarding Forward-Looking Information

This presentation contains statements which constitute “forward-looking information” within the meaning of applicable securities laws, including statements regarding the plans, intentions, beliefs and current expectations of Kirkland Lake Gold with respect to future business activities and operating performance. Forward-looking information is often identified by the words “may”, “would”, “could”, “should”, “will”, “intend”, “plan”, “anticipate”, “believe”, “estimate”, “expect” or similar expressions and include information regarding: (i) the amount of future production over any period; (ii) assumptions relating to revenues, operating cash flow and other revenue metrics set out in the Company's disclosure materials; and (iii) future exploration plans (iv) the temporary suspension of operations at the Cosmo Mine and the anticipated effects thereof . Investors are cautioned that forward-looking information is not based on historical facts but instead reflect KL Gold’s management’s expectations, estimates or projections concerning future results or events based on the opinions, assumptions and estimates of management considered reasonable at the date the statements are made. Although Kirkland Lake Gold believes that the expectations reflected in such forward-looking information are reasonable, such information involves risks and uncertainties, and undue reliance should not be placed on such information, as unknown or unpredictable factors could have material adverse effects on future results, performance or achievements of the combined company. Among the key factors that could cause actual results to differ materially from those projected in the forward-looking information are the following: the ability

  • f Kirkland Lake Gold to successfully integrate the operations and employees of its Canadian and Australian operations, and realize synergies and cost savings, and to the extent,

anticipated; the potential impact on exploration activities; the potential impact on relationships, including with regulatory bodies, employees, suppliers, customers and competitors; the re-rating potential following the consummation of the merger; changes in general economic, business and political conditions, including changes in the financial markets; changes in applicable laws; and compliance with extensive government regulation. This forward-looking information may be affected by risks and uncertainties in the business of Kirkland Lake Gold and market conditions. This information is qualified in its entirety by cautionary statements and risk factor disclosure contained in filings made by Kirkland Lake Gold , including Kirkland Lake Gold’s annual information form, financial statements and related MD&A for the first quarter ended March 31, 2017 and their interim financial reports and related MD&A for the period ended March 31, 2017 filed with the securities regulatory authorities in certain provinces of Canada and available at www.sedar.com. Should one or more of these risks or uncertainties materialize, or should assumptions underlying the forward-looking information prove incorrect, actual results may vary materially from those described herein as intended, planned, anticipated, believed, estimated or expected. Although Kirkland Lake Gold has attempted to identify important risks, uncertainties and factors which could cause actual results to differ materially, there may be others that cause results not to be as anticipated, estimated or intended. Kirkland Lake Gold does not intend, and do not assume any obligation, to update this forward-looking information except as otherwise required by applicable law. All dollar amounts in this presentation are expressed in U.S. Dollars unless otherwise noted.

Use of Non-GAAP Measures

This Presentation refers to average realized price, operating costs, all-in sustaining costs per ounce of gold sold, free cash flow and cash costs of production because certain readers may use this information to assess the Company’s performance and also to determine the Company’s ability to generate cash flow. This data is furnished to provide additional information and are non-GAAP measures and do not have any standardized meaning prescribed by International Financial Reporting Standards (“IFRS”). These measures should not be considered in isolation as a substitute for measures of performance prepared in accordance with IFRS and are not necessarily indicative of operating costs presented under IFRS. Refer to each Company’s most recent MD&A for a reconciliation of these measures.

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SLIDE 3

KLGOLD.COM TSX:KL

INVESTMENT THESIS

1.Refer to Slide 2 “Forward Looking Information” 2017 estimated production guidance 530,000 – 570,000 ounces and cost guidance . 2. See Kirkland Lake Gold News Release dated April 12, 2017 for additional details. 3. Refer to appendix for NI 43-101 Disclosure and News Release dated March 28, 2017 for additional year-end 2016 Mineral Reserve and Resource details 4.Cash position as at March 31, 2017 5. See Non-GAAP Measures sections in forward looking statements; Operating Cash Costs per ounce and AISC per ounce reflect an average USD to CAD exchange rate of 1.35 and a USD to AUD exchange rate of 1.325, for additional detail see Kirkland Lake Gold Press release dated March 29, 2017 for additional detail 6. Payable on July 14, 2017 to shareholders of record on June 30, 2017 7. Source: Company filings, FactSet and available equity research at May 19, 2017. Production and Cash Flow are broker consensus averages exclude TSX:KL

1

3

5.6 8.2

TSX:KL Peer Average

$2,809 $3,866

TSX:KL Peer Average

Operating Platform in Tier 1 Mining Jurisdictions Strong Balance Sheet & Low Cost Production District Scale Exploration Potential Strong Value Proposition 7

Enterprise value to ounce of 2017 production 2017 Price to Cash flow

  • Revised 2017 guidance to 530k – 570k1 ounces from 5 gold mines in Canada & Australia
  • Consolidated Q1/17 production of 130k oz (Macassa 48,723 oz & Fosterville 46,083 oz) 2
  • Macassa Mineral Reserve increased 37% to 2.0 million oz grading 20.8 g/t Au 3
  • Fosterville Mineral Reserve increased 66% to 643,000 oz grading 9.2 g/t Au 3
  • Cash Position US$280 million4
  • Revised Consolidated 2017 operating cost guidance US$475/oz – US$525/ oz1,5 and

AISC US$850/oz – US$900/ oz1,5

  • Initiation of quarterly dividend of C$0.01 per share6
  • Significant discovery and expansion potential in established gold camps with +20 drill

rigs in operation across Canada & Australia

  • 2017 growth exploration budget of US$45 - $55 million
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SLIDE 4

KLGOLD.COM TSX:KL

OPERATING PLATFORM IN TIER 1 MINING JURISDICTIONS

4

295,838 oz 239,724 oz

100,000 150,000 200,000 250,000 300,000 350,000

Canadian Operations Australian Operations

2016 Pro Forma Gold Production

50,000 100,000 150,000 200,000 250,000 300,000 350,000 400,000 450,000 500,000 550,000 600,000

Consolidated Q1/17 Production

1.Pro forma information operating results from: (i) the former Newmarket Gold Inc. (“Newmarket”) assets for the entire 12-month period ended December 31, 2016 including the period from January 1, 2016 to November 29, 2016 prior to the merger with Kirkland Lake Gold Inc. (“KLG”) on November 30, 2016 (See Newmarket Press Release dated November 3, 2016); and (ii) the Holt Mine Complex for the entire 12-month period ended December 31, 2016, including the period of January 1, 2016 to January 25, 2016 prior to the acquisition of St Andrew Goldfields Ltd. (“SAS”) by KLG on January 26, 2016 (See KLG press release dated May 12, 2016). See Press Releases dated January 9, 2017 and February 27, 2017 filed on the SEDAR profile of the Company

130,425 oz

  • Consolidated 20161 operating

cost per ounce2 of $571, below the the guidance of US$600-$650

  • Consolidated AISC per ounce2 of

$923 in 2016 below the guidance

  • f US$1,000-1,050

On track to meet 2017 guidance of

530,000 – 570,000 oz

1 1

(Guidance of 270k – 290k oz) (Guidance of 225k – 235k oz)

2017 Outlook

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SLIDE 5

KLGOLD.COM TSX:KL

5

1 Cash position as at March 31, 2017, see News Release dated April 12, 2017 2 Refer to MD&A for the three months ended March 31, 2017

STRONG BALANCE SHEET1

Cash US$280 million Convertible Debentures2(at Mar 31/17) US$89 million

KGI.DB: 6% C$15.00 Conv. Price C$56.8M mature June 2017 KGI.DB.A: 7.5% C$13.70 Conv. Price C$62.0M mature Dec 2017

Net Cash US$191 million

CAPITAL STRUCTURE & OWNERSHIP

Issued & Outstanding (at Mar 31/17) 206 million Market Capitalization (TSX)

(May 19, 2017)

$ 2.1 billion Daily Avg. Volume – 30 day

(May 19, 2017)

1.9 million shares Insider Ownership

(Eric Sprott)

~10%

Fosterville Gold Mine, Australia Macassa Gold Mine, Canada

STRONG FINANCIAL POSITION

INITIATION OF DIVIDEND POLICY

Quarterly dividend of C$0.01 per common share

Payable on July 14, 2017 to shareholders of record on June 30, 2017

NORMAL COURSE ISSUER BID

Company can purchase up to 10% of current issued and outstanding shares in public float (15.2 mil shares)

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SLIDE 6

KLGOLD.COM TSX:KL

6

CANADIAN OPERATIONS AUSTRALIAN OPERATIONS (U.S.)$ Macassa Mine Holt Mine Taylor Mine Fosterville Mine Cosmo Mine 3 Consolidated

Gold Production (oz) 190,000 – 195,000 65,000 – 70,000 55,000 – 60,000 200,000 – 225,000 20,000

530,000 – 570,000

Operating Cash Costs per Ounce1,2 $520 – $550 $670 – $725 $450 – $525 $310 – $330 $1,500 – $1,600

$475- $525

AISC per Ounce1,2

$850- $900

Sustaining Capital and Growth Capital ($ million)

$180- $200

Exploration Expenditure ($ million)

$45- $55

Royalty Cost ($ million)

$20- $25

G & A ($ million)

$17

2017 REVISED OUTLOOK

1) See Non-GAAP Measures sections in forward looking statements; 2) Operating Cash Costs per ounce and AISC per ounce reflect an average USD to CAD exchange rate of 1.35 and a USD to AUD exchange rate of 1.325. 3. See Kirkland Lake Gold News release dated May 4 2017 3). Effective June 30, 2017, Kirkland Lake Gold will suspend production at the Cosmo Mine, allowing the Company to focus its activities on an aggressive resource definition and exploration program at the mine. The Cosmo Mine will be maintained in a state of readiness to allow operations to recommence when exploration, resource definition and the development planning phase is completed.

2017 breakdown by mine production Outlook Cornerstone assets represent +80% of consolidated

  • utlook

Macassa 35% Fosterville 39% Taylor 10% Cosmo 4% Holt 12%

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SLIDE 7

KLGOLD.COM TSX:KL

HIGH GRADE, LOW COST CORNERSTONE ASSETS

CORNERSTONE ASSETS LOW COST OUNCES DISTRICT SCALE GROWTH

  • 1. Refer to Appendix slide 40 for break down by category. 2. Kirkland Lake Gold revised guidance provided on May 4, 2017, refers to mid end range of guidance 3. See Non-GAAP Measures sections in forward looking statements;

7

CORNERSTONE ASSETS LOW COST OUNCES DISTRICT SCALE GROWTH

  • Macassa Fosterville & Taylor Mine
  • ~ 84% of 2017E production2
  • Growth potential with excess milling capacity at each mill
  • <US$525 Operating Costs and <US$850 AISC (Full Year 2016)
  • Fosterville exploration lease +500 km2
  • Macassa exploration lease +40 km2
  • 120 km land package along prolific Porcupine Destor Fault

Macassa Mine Fosterville Mine Taylor Mine Consolidated P&P Reserve Grade (g/t Au) 1 20.8 9.2 5.4 14.6 2017 Midpoint of Production Guidance (oz) 2 192,500 212,500 57,500 ~ 460,000 2017E Operating Costs (US$/Oz Sold) 2,3 $535 $320 $488 < $450

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SLIDE 8

KLGOLD.COM TSX:KL

8

MACASSA: KEY VALUATION DRIVER

41,054 38,929 42,866 52,318 48,723 15.3 12.2 13.7 16.3 17.1

10 11 12 13 14 15 16 17 18 19 20

Q1 - 16 Q2- 16 Q3 - 16 Q4 - 16 Q1 - 17

30,000 35,000 40,000 45,000 50,000 55,000

Gold Production (oz) Gold Grade (g/t)

MINERAL RESOURCE & RESERVES (Dec 31, 2016) 1

Proven and Probable Mineral Reserves increased by 37% to 2.01 million

  • unces of gold at an average grade of 20.8 g/t gold (3.0 Mt).

Measured and Indicated Mineral Resources are exclusive of Mineral Reserves and contain 1.32 million ounces grading 16.6 g/t gold (2.24 Mt). Extensive surface and underground drilling underway.

$1,003 $959 $834 $782

$644 $546 $421 $514

Q2 2016 Q3 2016 Q4 2016 Q1 2017 Production Costs US$/oz2,3

AISC OCC The Macassa Mine is a high-grade gold mine, located in Kirkland Lake, Ontario, scheduled to produce 190k- 195k oz of gold at an operating cost of $520 - $550 per ounce2 sold in 2017.

  • 1. Refer to appendix for NI 43-101 disclosure 2. See Kirkland Lake News Release dated May 4, 2017 and Q1 2017 MD&A for additional detail reporting Q1 2017 operating and AISC results
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SLIDE 9

KLGOLD.COM TSX:KL

PLAN VIEW OF PROJECT AREA – KIRKLAND LAKE GOLD CAMP

9

  • The Kirkland Lake gold camp

has been in production for + 100 years

  • One of the highest grade gold

camps in the world

  • Almost 25 Moz has been

produced to date, from seven mines

  • Kirkland Lake Gold owns five

former producing high grade mines with historical production of ~22 Moz of gold

  • Average head grade of 15.1 g/t

South Mine Complex Gold Deposit

SMC

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SLIDE 10

KLGOLD.COM TSX:KL

REGIONAL EXPLORATION ACROSS A PROLIFIC TREND

See News Releases dated January 19, 2016 and November 7, 2016 filed on the sedar profile of Kirkland Lake Gold Ltd on www.sedar.com

  • Significant expansion potential down dip, along strike
  • Previously released surface exploration results to the east returned values of 29.5 g/t gold over 0.3m (AB-15-92) and 28.1 g/t gold
  • ver 0.6m (AB-15-106)
  • Recent Highlight results along the easterly strike of the SMC include:
  • 651.8 g/t gold over 3.8 metres, 102.5 g/t gold over 3.2 metres and 100.5 g/t gold over 1.6 metres

10

53-2921 651.8 g/t over 3.8m

Surface drills testing extensions to SMC

53-3099 100.5 g/t over 1.6m 53-3098 102.5 g/t over 3.2m

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SLIDE 11

KLGOLD.COM TSX:KL

11

FOSTERVILLE GOLD MINE: LOW COST PRODUCER

33,138 37,245 36,967 44,406 46,083 7.3 7.5 6.9 8.5 11.1

4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0

Q1 - 16 Q2- 16 Q3 - 16 Q4 - 16 Q1 - 17

20,000 25,000 30,000 35,000 40,000 45,000 50,000

Gold Production (oz) Gold Grade (g/t)

MINERAL RESOURCE & RESERVES(Dec 31, 2016) 1

Total Proven and Probable Mineral Reserves increased 66% to 643,000 ounces of gold at an average grade of 9.2 g/t Au (2.17 Mt). Measured & Indicated Mineral Resource3 grade increased 23% grading 5.7 g/t Au containing 2,790,000 ounces of gold (15.3 Mt). Resources are inclusive of Reserves The Lower Phoenix gold system has been traced by development and drilling for

  • ver 2 km and remains open for further expansion.

$741 $765 $641 $571 $440 $471 $420 $354

Q2 16 Q3 16 Q4 16 Q1 17

Production Costs US$/oz2

AISC OCC

The Fosterville Gold Mine is the largest gold producer in the state of Victoria, Australia scheduled to produce 200k- 225k oz of gold at an operating cost of $310 - $330 per ounce2 sold in 2017.

  • 1. Refer to appendix for NI 43-101 disclosure. 2.See Kirkland Lake Press release dated May 4, 2017 and Q1 2017 MD&A for additional detail, costs presented for Q4 16 only represent the one month since the transaction with Newmarket Gold ending December 31,

2016 reporting Q4 2016 operating and AISC see slide 2 forward looking information regarding non gap measures. 3. Resources are inclusive of Reserves – refer to slide 42.

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SLIDE 12

KLGOLD.COM TSX:KL

12

Harrier Drill Drive

12.5 g/t Au over 2.4m 12.75 g/t Au over 4.5m

Lower Phoenix

Drill Targets Harrier Decline Harrier

4.4 g/t Au over 6.1m 6.5 g/t Au over 25m 9.3 g/t Au over 3.3m 9.2 g/t Au

  • ver 11.8m

7.3 g/t Au

  • ver 13.9m

6.2 g/t Au over 1.9m

22.1 g/t Au over 3.3m

First recorded visible gold from Harrier 16.6 g/t Au

  • ver 3.05m

11.99 g/t Au over 3.4m 14.25 g/t Au over 3.6m 11.1 g/t Au over 4.9m 12.8 g/t Au over 8.5m 112 g/t Au over 11.9m 501 g/t Au over 4.5m 386 g/t Au over 3.4m 16.4 g/t Au over 16.5m 73.2 g/t Au over 7.8m 64.80 g/t Au over 4.3m 46.2 g/t Au

  • ver 6.6m

283 g/t Au over 2.8m 13.4 g/t Au over 3.8m 75.7 g/t Au over 5.4m 194 g/t Au over 3.1m 550 g/t Au over 3.5m 129 g/t Au over 6.2m 645 g/t Au

  • ver 3.4m

1,429 g/t Au over 4.97m

FOSTERVILLE GOLD MINE: DRILLING SUCCESS

  • Consistently intersecting high-grade gold in multiple zones: Harrier, Lower Phoenix, Lower Phoenix South and

Lower Phoenix North with grade increasing at depth on all zones

  • Key intercepts Lower Phoenix South & North: 645 g/t Au over 3.4m, 550 g/t Au over 3.5m, 194 g/t Au over 3.1m,

283 g/t Au over 2.8m, 645 g/t Au over 1.1m & 404 g/t over 7.5m

  • High-Grade Visible Gold (VG) intercepts at Harrier Gold Zone; 64.8 g/t Au over 4.3m, 46.2 g/t Au over 6.6m,

129 g/t over 6.2m & 25.6 g/t Au over 3.7m

  • Record high-grade drill intercept on the Lower Phoenix foot wall announced Jan 17, 2017 was 1,429 g/t Au
  • ver 4.97m

All intercepts presented are estimated true width

Mineral Resources, Reserves and mining as at December 31, 2016

645 g/t Au over 1.1m 404 g/t Au over 7.5m 25.6 g/t Au over 3.7m

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SLIDE 13

KLGOLD.COM TSX:KL

13

FOSTERVILLE GOLD MINE: DISTRICT SCALE POTENTIAL

Harrier Drill Drive

= Visible gold elevation depth, increasing with depth Current Mining Front

BLOCK A BLOCK C BLOCK D BLOCK B Lower Phoenix Phoenix 

Fosterville underground Reserve of 490,000 ounces at 9.8 g/t Au (1,560,000 tonnes) with Measured and Indicated resources from the high grade Phoenix and Lower Phoenix where Fosterville is currently being mined of of 1.08 million ounces grading 10.1 g/t Au (3,310,000 tonnes) as of Dec 20162

With additional drilling success blocks A,B,C and D are targeted to add +5 years of additional mine life on top of current reserves and resources (Block B drilling underway testing 1000 metres down plunge from current resources/reserves)

Mill Capacity +850k tpa, currently at ~700k tpa. opportunity to open additional mining fronts (three total) in Block A and Block D

Additionally there are over 20 kilometers of potential gold bearing structures on the 505km2

Fosterville property highlighting the exceptional potential of this district

  • 1. Refer to slide 2 forward looking “Cautionary Language’ 2. Refer to the appendix “NI 43-101 Disclosure
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SLIDE 14

KLGOLD.COM TSX:KL

FOSTERVILLE FAULT MINING LEASE LONG SECTION

14

Target Target Target

Current mining front

Mining lease long section (~17km2) contains ~10km strike length of Mineral Resources with ~7km on Fosterville Fault Line and ~3km

  • n the O’Dwyer’s Fault Line

Shallow, limited drilling North of the Central North past producing open pit Near mine mineralization remains open along strike and down plunge, gradual grade increasing at depth in the Lower Phoenix and Harrier zones Fosterville Fault is one of many gold bearing structures within a 505km2 exploration lease land package

Limited shallow 50-100m drilling

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SLIDE 15

KLGOLD.COM TSX:KL

FOSTERVILLE REGIONAL POTENTIAL

15

  • Mining lease (MIN5404:~17km2) contains ~10km strike length of

Mineral Resources with ~7km on Fosterville Fault Line and ~3km

  • n the O’Dwyer’s Fault Line.
  • Surrounding exploration leases encompass ~505km2 and

contain ~20km of potential gold-bearing structures along 7 interpreted fault lines.

  • 5 of the 7 lines contain known gold occurrences with historic

resources and/or historic workings.

  • The processing plant is located within 30km of prospective

targets.

  • Limited exploration work on surrounding exploration lease
  • The 2017 exploration program includes planned drilling for the

Sugarloaf Line (SW of operation), soil sampling in northern part

  • f exploration lease and 2D seismic lines over northern and

southern ends of mining lease.

  • District scale potential within a well known camp of multi-

million ounce gold deposits 1.08 million ounces M&I resources at 10.1 g/t gold1, current mining zones of Phoenix, Lower Phoenix* Fosterville mill

* Refer to appendix NI 43-101 technical disclosure, technical reports filed on sedar March 30, 2017 and Year-end 2016 Resource and Reserve News release filed March 28, 2017

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SLIDE 16

KLGOLD.COM TSX:KL

16

TAYLOR GOLD MINE: NEWEST GOLD MINE

7,347 11,408 11,630 10,048 10,942 7.6 6 7.1 6.7 5.6

1 2 3 4 5 6 7 8 9 10

Q1 - 16 Q2- 16 Q3 - 16 Q4 - 16 Q1 - 17

5,000 6,000 7,000 8,000 9,000 10,000 11,000 12,000

Gold Production (oz) Gold Grade (g/t)

MINERAL RESOURCE & RESERVES(Dec 31, 2016) 1

Measured & Indicated Mineral Resources increased by 40% to 493,000 ounces

  • f gold at an average grade of 5.6 g/t gold (2.76 Mt).

Proven & Probable Reserves of 129,000 ounces of gold grading 5.4 g/t (743 kt). Kirkland Lake Gold’s newest mine, 2016 first full year production. Significant exploration potential along the Porcupine Destor Fault Zone. The Taylor Gold Mine is high-grade cornerstone asset for the company, located approx.70 km west of the Holt Mill. The mine is scheduled to produce 55,000 – 60,000 ounces of gold.

  • 1. Refer to appendix for NI 43-101 Disclosure 2. See Kirkland Lake News Release dated May 4, 2017 and Q1 2017 MD&A for additional detail reporting on Q1 2017 operating and AISC results

$732 $812 $798 $379 $446 $607

Q3 - 16 Q4 - 16 Q1 - 17

Production Costs US$/oz 2

AISC OCC

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SLIDE 17

KLGOLD.COM TSX:KL

TAYLOR GOLD MINE: UPSIDE POTENTIAL

1.5km

1.5km

Multi-rig diamond drilling underway

Recent drill results announced new discoveries and extensions at the Taylor Gold Mine Complex

10.31 g/t Au over 3.2 m new WPZ Deposit style mineralization approximately 300 m to the west

9.50 g/t Au over 4.5 m identifies up-dip extension of the WPZ Deposit 1004 Zone

3.29 g/t Au over 9.6 m and 4.59 g/t Au over 5.8 m on surface, identifies new mineralization 800 m east of the Shaft Deposit

17

10.3 g/t Au over 3.2 m 9.5 g/t Au over 4.5 m 3.29 g/t Au over 9.6 m and 4.59 g/t Au

  • ver 5.8 m

Longitudinal View Looking North

39.6 g/t Au over 1.1 m (14.6 g/t

Au over 1.1 m cut)

13.9 g/t Au over 1.5 m

(12.7 g/t Au over 1.5 cut)

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SLIDE 18

KLGOLD.COM TSX:KL

18

PROJECT LOCATION – DISTRICT SCALE OPPORTUNITY

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SLIDE 19

KLGOLD.COM TSX:KL

FOCUSED EXECUTION & VALUE CREATION

19

Kirkland Lake Gold is focused on maintaining positive and growing free cash flow margins while keeping a disciplined approach to capital allocation to ensure profitable sustainable gold production

  • Revised 2017E Guidance of 530,000 – 570,000 oz from Solid

Operating Platform in Tier 1 Mining Jurisdictions

  • Strong free cash flow generation and committed leadership

team to deliver targets

  • Cash balance of US$280 million at March 31, 2017
  • High quality projects with significant exploration upside

Diversified Production Low Cost, Robust Margins Strong Balance Sheet District Scale Exploration Potential

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SLIDE 20

APPENDIX

Notes, additional disclosure and other information

KLGOLD.COM TSX: KL

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SLIDE 21

KLGOLD.COM TSX:KL

VALUE PROPOSTION

21 Source: Company filings, FactSet, Bloomberg, and available equity research, market data as of May 19, 2017 1. NAV, Production, and Cash Flow based on broker consensus; Averages exclude Kirkland Lake

Price / 2017E Cash Flow1 P / NAV1 EV / 2017E Production1

1.23x 1.22x 1.10x 1.07x 1.00x 0.91x 0.91x 0.90x 0.87x 0.84x 0.82x OceanaGold Regis Kirkland Lake Northern Star New Gold Torex Klondex Richmont Detour Guyana Alamos

Peer Avg. 0.98x

$4,736 $4,571 $4,489 $4,248 $3,812 $3,527 $3,526 $3,501 $3,444 $2,850 $2,809 Torex Detour Alamos Guyana Richmont Regis Northern Star OceanaGold New Gold Kirkland Lake Klondex

Peer Avg. US$3,866/oz

13.1x 9.1x 8.9x 8.7x 7.9x 7.7x 7.6x 7.2x 6.0x 5.6x 5.4x Alamos Detour Richmont Guyana Torex Regis Klondex Northern Star New Gold Kirkland Lake OceanaGold

Peer Avg. 8.2x

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SLIDE 22

KLGOLD.COM TSX:KL

ANALYST COVERAGE (May 2017)

22

30 Day Avg Volume 1,200,000 (as of April 18, 2017)

Broker Initiation Date Target Price (C$) Target Rating FY17E Production Oz (000’s) FY17E Cash Costs (US$) CIBC Dec ’16 $12.50

  • utperform

550 $538 Scotia

  • $11.50
  • utperform

538 $541 GMP Oct ’15 $14.50 buy 509 $637 Macquarie Dec ’16 $16.00

  • utperform
  • RBC Capital

Dec ’16 $13.00

  • utperform

517 $540 PI Financial Jan ’16 $12.95 buy 515 $585 National Bank Dec ’16 $14.25 Outperform 520 $537 M Partners Dec ’16 $14.75 buy

  • $646

BMO

  • $12.75

market Perform 544 $520 Average $13.58

Opinions estimates or forecasts regarding Kirkland Lake Gold performance made by these analysts are theirs alone and do not represent the opinions estimates or forecasts of the Company or its management.

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SLIDE 23

KLGOLD.COM TSX:KL

BOARD AND SENIOR MANAGEMENT

23

Board of Directors

Eric Sprott Chairman of the Board Anthony Makuch President & CEO Barry Olson Independent Pamela Klessig Independent Jeffrey Parr Independent Raymond Threlkeld Independent Jonathan Gill Independent Arnold Klassen Independent

Senior Management Team

Anthony Makuch President & Chief Executive Officer Darren Hall Chief Operating Officer Philip Yee Chief Financial Officer Alasdair Federico EVP Corporate Affairs and CSR

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SLIDE 24

KLGOLD.COM TSX:KL

Q4/16 Canadian Operating Results Tonnes Milled Grade (g/t Au) Recovery (%) Production (oz) MACASSA MINE COMPLEX1 102,289 16.3 97.6 52,318 HOLT MINE 113,499 4.6 94.5 15,761 HOLLOWAY MINE 65,215 5.4 87.3 9,825 TAYLOR MINE 48,254 6.7 96.1 10,048

CONSOLIDATED PRODUCTION 87,952

CANADIAN OPERATIONS – QUARTERLY OPERATING RESULTS

24

1.Pro forma information operating results from: (i) the former Newmarket Gold Inc. (“Newmarket”) assets for the entire 12-month period ended December 31, 2016 including the period from January 1, 2016 to November 29, 2016 prior to the merger with Kirkland Lake Gold Inc. (“KLG”) on November 30, 2016KLG (See Newmarket Press Release dated November 3, 2016); and (ii) the Holt Mine Complex for the entire 12-month period ended December 31, 2016, including the period of January 1, 2016 to January 25, 2016 prior to the acquisition of St Andrew Goldfields Ltd. (“SAS”) by KLG on January 26, 2016 (See News Release dated May 12, 2016). See News Release dated January 9, 2017 filed on the SEDAR profile of the Company at www.sedar.com.

  • 2. In December 2016, Kirkland Lake Gold announced the transitioning of the Holloway Gold Mine to a temporary suspension of operations. The Holloway Mine will be maintained in a production ready state with the intent of restarting the operation in the future with meaningful and enhanced economics

and pending successful exploration programs being completed (See News Release dated December 12, 2016).

Q1/17 Canadian Operating Results Tonnes Milled Grade (g/t Au) Recovery (%) Production (oz) MACASSA MINE 91,460 17.1 97.1 48,723 HOLT MINE 105,629 4.8 94.9 15,318 TAYLOR MINE 63,289 5.6 96.7 10,942 HOLLOWAY MINE 2 2,676 3.5 89.9 267

CONSOLIDATED PRODUCTION 75,250

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KLGOLD.COM TSX:KL

AUSTRALIAN OPERATIONS – QUARTERLY OPERATING RESULTS

Q4/16 Australian Operating Results Tonnes Milled Grade (g/t Au) Recovery (%) Production (ozs)

FOSTERVILLE GOLD MINE 176,242 8.48 92.4 44,406 COSMO GOLD MINE 157,770 2.78 94.5 13,307 STAWELL GOLD MINE 2 172,049 1.49 84.5 6,971 CONSOLIDATED PRODUCTION 64,684

Q1/17 Australian Operating Results Tonnes Milled Grade (g/t Au) Recovery (%) Production (ozs)

FOSTERVILLE GOLD MINE 137,788 11.1 93.7 46,083 COSMO GOLD MINE 120,047 2.5 95.2 9,092 CONSOLIDATED PRODUCTION 55,175

25

1.Pro forma information operating results from: (i) the former Newmarket Gold Inc. (“Newmarket”) assets for the entire 12-month period ended December 31, 2016 including the period from January 1, 2016 to November 29, 2016 prior to the merger with Kirkland Lake Gold Inc. (“KLG”) on November 30, 2016 (See Newmarket Press Release dated November 3, 2016); and (ii) the Holt Mine Complex for the entire 12-month period ended December 31, 2016, including the period of January 1, 2016 to January 25, 2016 prior to the acquisition of St Andrew Goldfields Ltd. (“SAS”) by KLG on January 26, 2016 (See News release dated May 12, 2016). 2. The Company officially transitioned the Stawell Gold Mines into care and maintenance and in a state of operational readiness to possibly recommence operations with activities focused on exploration programs within the Aurora B discovery (See News Release dated December 12, 2016).

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SLIDE 26

KLGOLD.COM TSX:KL

SUMMARY OF RESULTS FOR Q1 20171,2

26

CONSOLIDATED FINANCIAL HIGHLIGHTS

  • 1. Refer to slide 2 for Forward looking and Non IFRS Disclosure. 2 See Kirkland Lake News Release dated May 4, 2017 and Q1 2017 MD&A for additional detail reporting on Q1 2017 operating and AISC results

(In thousands of dollars, except per share amounts)

THREE MONTHS ENDED MARCH 31, 2017 THREE MONTHS ENDED MARCH 31, 2016

Revenue $168,528 $79,926 Production costs $80,609 $42,715 Net earnings before taxes $24,957 $14,499 Net earnings $13,133 $9,115 Earnings per share – basic $0.06 $0.09 Earnings per share – diluted $0.06 $0.08 Cash flow from operations $68,606 $31,531 Cash investment on mine development & PPE $31,440 $13,349 Adjusted net earnings $16,141 $13,849 Adjusted net earnings per share $0.08 $0.13

THREE MONTHS ENDED MARCH 31, 2017 THREE MONTHS ENDED MARCH 31, 2016

Tonnes milled 520,888 223,450 Grade (g/t Au) 8.2 9.1 Recovery (%) 95.2 94.7 Gold produced (oz) 130,425 62,275 Gold sold (oz) 137,841 69,309 Average realized price ($/ oz sold) $1,223 $1,154 Operating cash cost per ounce ($/ oz sold) $564 $569 AISC ($/ oz sold) $873 $861

CONSOLIDATED KEY PERFORMANCE MEASURES

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SLIDE 27

KLGOLD.COM TSX:KL

DIVERSE ASSET PORTFOLIO

Strong Pipeline of Growth Projects Significant Exploration Potential

  • Macassa: Cornerstone, high-grade operation (reserve grade of 20.8 g/t)
  • Fosterville: Flagship operation continuing to demonstrate record production and record grades
  • Taylor: Exciting newly-built mine with exploration upside to drive future growth
  • Holt: Sustainable and profitable production
  • Cosmo: New near mine discoveries support improved operations
  • Holt Mine Complex (Zone 7): Planned production in 2018 will provide >25kozs per year to the Holt Mine

production profile

  • Hislop Mine: Potential development asset (shallow open pit opportunity proximal to mill)
  • Maud Creek: PEA-stage project planned to produce an average of ~50koz Au/year leveraging excess capacity at

the 100% owned Union Reefs mill

  • Big Hill: Low-cost, shallow oxide open pit opportunity within existing Stawell mining lease
  • Kirkland Lake Camp: Drilling to test the extension of the SMC and the historic ‘04/Main break at depth
  • Porcupine-Destor Fault : Focus to increase mine-life, as well as drill testing a 120km strike length of

prospective ground for new discoveries

  • Victoria: New high-grade discovery at Fosterville, active drilling on Aurora B discovery at Stawell
  • Northern Territory: New discoveries at Cosmo including Redbelly & Taipan Lode, with continued

exploration success at Sliver Lode

Refer to Reserve and Resource Statements in Appendix of this presentation. Refer to Slide 31 “NI 43-101 Disclosure”. 27

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KLGOLD.COM TSX:KL

MACASSA MINE OVERVIEW

Gold

  • ld Pr

Product ction (oz

  • z)

Prior to 2016 the Company’s year end was May 1 to April 30

F2014A F2015A 2016A Cash Costs (US$/oz) $812 $625 $527 AISC (US$/oz) $1,141 $803 $902

  • 1,000tpd underground operation
  • 70% of ore tonnes derived from the higher grade South

Mine Complex, and 30% from the ‘04 Break mineralization

  • Mining to depths of 5400 feet below surface
  • 2,000tpd processing capacity (50% unused)
  • Conventional CIP milling facility with 4 available mills

grinding to 40 to 45 micron

  • Recoveries averaging over 95%
  • Opportunities being reviewed to increase production and

reduce costs.

Resources are exclusive of Reserves. Refer to Reserve and Resource Statements Slide 31 “NI 43-101 Disclosure”. Refer to Slide 2 “Use of Non-GAAP Measures”.

1 Adjusted to reflect calendar-year production and grade. 1

Updated Mineral Reserves & Resources (Dec. 31, 2016)

#3 Shaft #2 Shaft 155,226

28

155,226 175,167

CY2015 2016

30,000 80,000 130,000 180,000 230,000

Proven and Probable Mineral Reserves increased by 37% to 2.01 million ounces of gold at an average grade of 20.8 g/t gold. Measured and Indicated Mineral Resources are exclusive of Mineral Reserves contain 1.32 million ounces grading 16.6 g/t gold.

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SLIDE 29

KLGOLD.COM TSX:KL

SOUTH MINE COMPLEX

Refer to 2015, 2015 MD&A detailed mined grade disclosure to actual mined grades

29

5000 – 5100 level average mined grade (13g/t gold – 15g/t gold) 5200 – 5300 level average mined grade (14g/t gold – 16g/t gold) 5300 – 5400 level average mined grade (14g/t gold – 21g/t gold)

Grade trend continues to increase with depth Proposed development

SMC zone remain open down plunge and along strike, drilling underway

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KLGOLD.COM TSX:KL

MACASSA CROSS SECTION LOOKING EAST

SELECTED HIGHLIGHTS AB-15-12 11.7 gpt/ 0.3 metres 0.34 opt/ 1.0 feet AB-15-23 3,241.4 gpt/ 0.7 metres 94.54 opt/ 2.3 feet 11.7 gpt/ 0.3 metres 0.34 opt/ 1.0 feet AB-15-53 12.3 gpt/ 0.5 metres 0.36 opt/ 1.7 feet AB-15-91 646.3 gpt/ 0.9 metres 18.85 opt/ 2.8 feet including 1,783.2 gpt/ 0.3 metres 52.01 opt/ 1.0 feet And 89.5 gpt/ 0.3 metres 2.61 opt/ 1.0 feet

See press release dated November 3, 2015, as filed on SEDAR

30

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SLIDE 31

KLGOLD.COM TSX:KL

SOUTH MINE COMPLEX (SMC) UNDERGROUND DRILLING

Plan View showing 5300’ Level infrastructure testing the easterly strike extension of the SMC

31

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SLIDE 32

KLGOLD.COM TSX:KL

SMC DRILLING ON THE HM CLAIM

32

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KLGOLD.COM TSX:KL

Holt-Holloway Exploration Targets

Holt Property Holloway Property

Holloway West (Harker) Lightval

33

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KLGOLD.COM TSX:KL

HOLT MINE COMPLEX

34

90,676 107,733 127,860 2014A 2015A 2016A

Gold

  • ld Pr

Product ction (oz

  • z)

Mi Mine Overview Sta tats2 2014A 2015A 2016A Gold Production (oz) 90,676 107,733 120,671 Gold Grade (g/t) 4.3 5.3 5.2 Cash Costs (US$/oz) $851 $698 $527 AISC (US$/oz) $1,072 $942 $902

  • Two producing mines contribute ~1,900 tpd
  • Holt ~1,300tpd
  • Taylor ~ 550tpd
  • 3,000tpd processing capacity (30% unused)
  • Conventional CIL milling facility
  • 3 mill grinding circuit
  • 2017 exploration is focused on increasing the level of

resources and reserves to boost mine life

  • 1. Refer to appendix for NI 43-101 Disclosure, 2. See Non-GAAP Measures sections in forward looking statements; Operating Cash Costs per ounce and AISC per ounce reflect an average USD to CAD exchange rate of 1.28 and a USD to AUD exchange rate of 1.28
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KLGOLD.COM TSX:KL

HOLT EXPLORATION TARGETS

35

  • 1. Refer to appendix for NI 43-101 Disclosure

Tousignant Deposit Zone 6 Zone 4 Mattawasaga Pits Zone 7 Surface

1075m Level 925m Level 435m Level

Current drift development

Zone 4 West Extension

500 m 1 km 2 km 3 km 1 km 1.5 km

Zone 7 Target ZONE 4 TARGET

Cascade Deposit

TOUSIGNANT TARGET

Longsection looking North at Holt Mine

2 surface drills targeting Tousignant West and Cascade Deposit Surface Shaft Bottom (867m)

LIGHTNING DEEP TARGET (down plunge) BLACKTOP TARGET (west extension) HOLLOWAY NORTH TARGET

500 m 1 km 3 km

DEEP THUNDER TARGET (along strike)

Longsection looking North at Holloway Mine

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KLGOLD.COM TSX:KL

COSMO GOLD MINE OVERVIEW

36

77,740 63,255 55,765 2014A 2015A 2016A

Gold

  • ld Pr

Product ction (oz

  • z)

Mi Mine Overview Sta tats 2014A (3) 2015A(3) 2016A Gold Production (oz) 77,740 63,255 55,765 Gold Grade (g/t) 3.14 2.99 2.9 Recovery (%) 88.9 90.7 93.6 Cash Costs (US$/oz)(4) $1,000 $917 $1,048 AISC (US$/oz) (4) $1,263 $1,154 1,173

  • Located in the Northern Territory which also hosts additional camps

including Union Reefs, Maud Creek, and Howley

  • ~800ktpa underground operation with decline access employing

primarily Avoca mining method

  • Mill located at Union Reefs, 67km away from Cosmo, has 2.0Mtpa

processing capacity (60% unused) and conventional circuit – 3 stage crush, 2 stage ball, gravity and CIL, with regional toll milling

  • pportunities
  • Effective June 30, 2017, Kirkland Lake Gold will suspend production

at the Cosmo Mine, pending exploration success. The Mine will be maintained in a state of readiness to allow operations to recommence when exploration, resource definition and the development planning phase is completed.

  • Highlights and Key Drill Intercepts from the Newly Discovered

Lantern Gold Deposit near existing underground infrastructure:

  • 119 g/t Au(1)over 4.5m (ETW 4.0m), including 521 g/t Au(1)over

1.0m (ETW 0.9m) in hole CW93515

  • 15.27 g/t Au(1) over 11.1m (ETW 7.0m), including 29.7 g/t

Au(1)over 5.2m (ETW 3.1m),and 23.87 g/t Au over 5.4m (ETW 2.9m), including 125 g/t Au(1) (2)over 0.8m (ETW 0.4m) in hole CW101012

  • 4.34 g/t Au(1)over 22.75m (ETW 11.3m) in hole CW101002(2)
  • 4.23 g/t Au over 16.6m (ETW 9.8m) in hole CW101010
  • 9.64 g/t Au(1)over 6.0m (ETW 3.85m) in hole CW101006

ETW - Estimated True Width (1) Visible gold present in drill intercept (2) Previously reported intercept - See News Release dated July 22, 2015 (3) Operating results from previous owners (4) 2016 operating costs and AISC refer to the one month ended December 31, 2016 following the completion of the business combination with Newmarket Gold.

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KLGOLD.COM TSX:KL

COSMO MINE: NEW LANTERN DEPOSIT

37

Note: For further information on drill results see News Release dated March 6, 2017 at www.klgold.com

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KLGOLD.COM TSX:KL

STAWELL GOLD MINE

38

39,230 36,321 32,204 2014A 2015A YTD2016A

Gold

  • ld Pr

Product ction (oz

  • z)

Mi Mine Overview Sta tats 2014A 2015A YTD2016A Q4 2016 FY 2016 Gold Production (oz) 39,230 36,321 25,233 6,971 32,204 Gold Grade (g/t) 1.67 1.56 1.46 1.49 1.47 Recovery (%) 78.8 80.8 79.9 84.5 80.9 Cash Costs (US$/oz) $1,151 $917 $1,222 $1,973 $1,973 AISC (US$/oz) $1,193 $1,063 $1,345 $2,025 $2,025

  • Q4 2016 Stawell Gold Mines put on Care and Maintenance
  • Underground operation with decline access employing open

stoping with either CRF or combinations of CRF and rock fill

  • r all rock fill with pillars
  • 1.0 Mtpa processing capacity; conventional crush-grind

followed by sulphide flotation and CIL

  • Open Pit, Big Hill P&P Reserves of 132 koz at 1.59 g/t Au,

M&I of 166 koz at 1.52 g/t and Inferred Resources of 2 koz at 1.15 g/t

  • 2016 Drill Campaign has 2 drills active on the East Flank

(mining traditionally focused on West Flank with 2.3 Moz of past production):

  • Aurora B discovery on East Flank with maiden resource of

30,400oz at 3.5 g/t

  • Intercepts include 13.7 g/t over 5.4m
  • Big Hill Gold Project is a low cost, shallow oxide open pit
  • pportunity adjacent to Stawell
  • Currently awaiting permitting process
  • 1. 2016 operating costs and AISC refer to the one month ended December 31, 2016 following the completion of the business combination with Newmarket Gold.
slide-39
SLIDE 39

KLGOLD.COM TSX:KL

STAWELL GOLD MINE AURORA B GOLD ZONE

39

Maiden Inferred Mineral Resource of 30 30,400 oun unces gr grading 3. 3.5g/t gold.

East Flank Target Aurora A

Traditionally mined West Flank total production to date 2.3 .3 mil illion

  • n ou
  • unces

es

Magdala

13 13.7 g/t /t gold gold over 5. 5.4 4 m

Aurora B located approximately 500m above Aurora A

Two diamond drill rigs active on the east flank

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SLIDE 40

KLGOLD.COM TSX:KL

40

APPENDIX: CONSOLIDATED MINERAL RESERVES BY ASSET AS OF DEC 31, 2016

PROVEN PROBABLE PROVEN & PROBABLE Tonnes (000’s) Gold Grade (g/t ) Gold Ounces Tonnes (000’s) Gold Grade (g/t ) Gold Ounces Tonnes (000’s) Gold Grade (g/t ) Gold Ounces Macassa

610 16.9 332 2,390 21.8 1,670 3,000 20.8 2,010

Taylor

743 5.4 129 743 5.4 129

Holt

1,450 4.2 194 2,500 4.7 376 3,950 4.5 570

Holloway

57 5.7 10 57 5.7 10

Hislop

176 5.8 33 176 5.8 33

Total Canadian Assets

2,060 8.0 526 5,870 11.8 2,220 7,930 10.8 2,750

Fosterville

896 7.9 229 1,280 10.1 414 2,170 9.2 643

Northern Territory

98 3.0 9 2,310 2.3 168 2,400 2.3 177

Stawell

2,700 1.5 132 2,700 1.5 132

Total Australian Assets

994 7.5 238 6,280 3.5 713 7,280 4.1 952

Total Reserves

3,050 7.8 764 12,200 7.5 2,940 15,200 7.6 3,700

Notes CIM definitions (2014) were followed in the calculation of Mineral Reserves Mineral Reserves were estimated using a long-term gold price of US$1,200/oz (C$1,500/oz; A$1,500/oz) Cut-off grades for Canadian Assets were calculated for each stope, including the costs of: mining, milling, General and Administration, royalties and capital expenditures and other modifying factors (e.g. dilution, mining extraction, mill recovery. Cut-off grades for Australian Assets from 0.4 g/t Au to 3.1 g/t Au, depending upon width, mining method and ground conditions; Dilution and mining recovery factors varied by property Mineral Reserves estimates for the Canadian Assets were prepared under the supervision of P. Rocque, P. Eng. Mineral Reserves estimates for the Fosterville property were prepared under the supervision of Ion Hann, FAusIMM. Fosterville CIL Residues are stated as Proven contained ounces. Mill recovery of 25% are planned, based on operating performance. Mineral Reserves estimates for the Northern Territory property were prepared under the supervision of Jason Keily, FAusIMM (CP). Mineral Reserves estimates for the Stawell property were prepared under the supervision of Ian Holland, FAusIMM. Totals may not add exactly due to rounding

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KLGOLD.COM TSX:KL

41

APPENDIX: CANADIAN ASSETS MINERAL RESOURCES AS OF DEC 31, 2016

MEASURED INDICATED MEASURED & INDICATED INFERRED Tonnes (000’s) Gold Grade (g/t) Gold Ounces Tonnes (000’s) Gold Grade (g/t) Gold Ounces Tonnes (000’s) Gold Grade (g/t) Gold Ounces Tonnes (000’s) Gold Grade (g/t) Gold Ounces Macassa 907 16.2 474 1,570 16.8 849 2,480 16.6 1,320 1,420 20.2 924 Taylor 399 6.0 77 2,360 5.5 416 2,760 5.6 493 1,810 5.4 313 Holt 3,960 4.3 549 3,020 4.1 398 6,970 4.2 947 8,690 4.7 1,320 Holloway 156 4.1 21 1,210 5.4 210 1,370 5.3 231 2,710 5.2 456 Hislop 0.0 1,150 3.6 132 1,150 3.6 132 797 3.7 95 Aquarius 0.0 22,300 1.3 926 22,300 1.3 926 9 0.8 Canamax 0.0 240 5.1 39 240 5.1 39 170 4.3 23 Ludgate 0.0 522 4.1 68 522 4.1 68 1,400 3.6 162 Totals 5,420 6.4 1,120 32,400 2.9 3,040 37,800 3.4 4,160 17,000 6.0 3,300

Notes 1) CIMM definitions (2014) were followed in the calculation of Mineral Resource 2) Mineral Resources are reported Exclusive of Mineral Reserves 3) Mineral Resource estimates were prepared under the supervision of D. Cater, P. Geo. Vice President Exploration Canada 4) Canadian Assets consist of Macassa, Holt, Taylor, Holloway, Canamax, Ludgate, Hislop, Aquarius 5) Mineral Resources are estimated using a long-term gold price of US$1,200/oz (C$1,500/oz) 6) Mineral Resources were estimated using a 8.57 g/t cut-off grade for Macassa, a 2.9 g/t cut-off grade for Holt, and a 2.6 g/t cut-off grade for Taylor, a 3.9 g/t cut-off grade (Holloway), a 2.5 g/t cut-off grade for Canamax and Ludgate, a 2.2 g/t cut-off grade for Hislop and 0 g/t cut-off grade for Aquarius 7) Totals may not add up due to rounding

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SLIDE 42

KLGOLD.COM TSX:KL

42

APPENDIX: AUSTRALIAN ASSETS MINERAL RESOURCES AS OF DEC 31, 2016

MEASURED INDICATED MEASURED & INDICATED INFERRED Tonnes (000’s) Gold Grade (g/t) Gold Ounces Tonnes (000’s) Gold Grade (g/t) Gold Ounces Tonnes (000’s) Gold Grade (g/t) Gold Ounces Tonnes (000’s) Gold Grade (g/t) Gold Ounces

Fosterville 2,760 4.8 427 12,600 5.8 2,360 15,300 5.7 2,790 5,400 4.6 792 Northern Territory 2,520 4.2 344 28,200 2.0 1,840 30,700 2.2 2,180 15,140 2.3 1,110 Stawell 81 3.7 10 3,620 2.0 236 3,700 2.1 246 1,130 2.9 104 Totals 5,360 4.5 781 44,400 3.1 4,440 49,700 3.3 5,220 21,700 2.9 2,000

Notes

1) CIM definitions (2014) were followed in the estimation of Mineral Resource. 2) Mineral Resources are estimated using a long-term gold price of US$1,200/oz (A$1,500/oz) 3) Mineral Resources for the Australian assets are reported Inclusive of Mineral Reserves. 4) Mineral Resources at Fosterville were estimated using cut-off grades of 0.7 g/t Au for oxide and 1.0 g/t Au for sulfide mineralization to potentially open-pitable depths of approximately 100m, below which a cut-off grade of 3.0 g/t Au was used. 5) Carbon-In-Leach Residues at Fosterville is stated as contained ounces – 25% recovery is expected based on operating performances. 6) Mineral Resources in the Northern Territory were estimated using a cut-off grade of 0.5 g/t Au for potentially open-pitable mineralization and cut-offs of 1.5 to 2.0g/t Au for underground mineralization. 7) Mineral Resources at the Stawell property were estimated using a 0.35g/t Au cut-off grade for potentially open-pitable mineralization and a range of cut-offs (2.0 to 2.3 g/t Au) for underground mineralization. 8) Mineral Resource estimates for the Fosterville property were prepared under the supervision of Troy Fuller, MAIG. 9) Mineral Resource estimates for the Northern Territory properties, excluding the Maud Creek Deposit, were prepared under the supervision of Mark Edwards, FAusIMM (CP). 10) Mineral Resource estimates for the Maud Creek property in the Northern Territory, was prepared by Danny Kentwell, FAusIMM. 11) Mineral Resource estimates for the Stawell property were prepared under the supervision of John Winterbottom, MAIG. 12) Totals may not add up due to rounding.

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KLGOLD.COM TSX:KL

NI 43-101 DISCLOSURE

Kirkland Lake Gold Qualified Person and QA/QC All production information and other scientific and technical information in this presentation with respect to Kirkland Lake Gold and its assets were prepared in accordance with the standards

  • f the Canadian Institute of Mining, Metallurgy and Petroleum and National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”) and were prepared, reviewed,

verified and compiled by Kirkland Lake Gold’s mining staff under the supervision of, Pierre Rocque P. Eng., Kirkland Lake Gold’s Vice President, Technical Services. The exploration programs across Kirkland Lake Gold’s land holdings in Kirkland Lake were prepared, reviewed, verified and compiled by Kirkland Lake Gold’s geological staff under the supervision of Doug Cater, P.Geo., the Company’s Vice President of Exploration, Canadian Operations. All reserve and resource estimates for the Kirkland Lake Properties as at December 31, 2014 have been audited and verified, and the technical disclosure has been approved, by Kirkland Lake Gold’s independent reserve and resource engineer, Glenn R. Clark, P. Eng., of Glenn R. Clark & Associates Limited. Mr. Clark is a ‘qualified person’ under NI 43-101. The QP’s for the mineral reserves and resources outlined under the PDFZ Properties are Doug Cater, P. Geo, and, Pierre Rocque P. Eng., the Vice President of Technical Services respectively. Sample preparation, analytical techniques, laboratories used and quality assurance-quality control protocols used during the exploration drilling programs are done consistent with industry standards and independent certified assay labs.

REFER TO KIRKLAND LAKE GOLD ANNUAL INFORMATION FORM DATED MARCH 30, 2017, AVAILABLE ON SEDAR (www.sedar.com) FOR COMPLETE NI 43-101 NOTES AND DISCLOSURE PERTAINING TO THE RESOURCE AND RESERVE STATEMENTS QUOTED HEREIN. All updated NI 43-101 TECHNICAL REPORTS IN SUPPORT OF THE COMPANY’S NEWS RELEASES ISSUED ON MARCH 30, 2017, ENTITLED “KIRKLAND LAKE GOLD INCREASES MINERAL RESERVES AT FLAGSHIP MACASSA MINE BY 37% AND FOSTERVILLE MINE BY 66%” WILL BE FILED ON MARCH 30, 2017 ON SEDAR AT WWW.SEDAR.COM

Qualified Persons Pierre Rocque, P.Eng., Vice President, Technical Services is a "qualified person" as defined in National Instrument 43-101 and has reviewed and approved disclosure of the Mineral Reserves technical information and data for all Kirkland Lake Gold assets in this News Release. Simon Hitchman, FAusIMM (CP), MAIG, Principal Geologist, is a “qualified person” as such term is defined in National Instrument 43-101 and has reviewed and approved the Mineral Resources technical information and data from the Australian Assets included in this News Release. Doug Cater, P. Geo Vice President, Exploration, Canada is a "qualified person" as defined in National Instrument 43-101 and has reviewed and approved disclosure of the Mineral Resources technical information and data for the Canadian Assets included in this News Release.

43

Cautionary Note to U.S. Investors - Mineral Reserve and Resource Estimates

All resource and reserve estimates included in this news release or documents referenced in this news release have been prepared in accordance with Canadian National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101") and the Canadian Institute of Mining, Metallurgy and Petroleum (the "CIM") - CIM Definition Standards on Mineral Resources and Mineral Reserves, adopted by the CIM Council, as amended (the "CIM Standards"). NI 43-101 is a rule developed by the Canadian Securities Administrators, which established standards for all public disclosure an issuer makes of scientific and technical information concerning mineral projects. The terms "mineral reserve", "proven mineral reserve" and "probable mineral reserve" are Canadian mining terms as defined in accordance with NI 43-101 and the CIM Standards. These definitions differ materially from the definitions in SEC Industry Guide 7 ("SEC Industry Guide 7") under the United States Securities Act of 1933, as amended, and the Exchange Act. In addition, the terms "mineral resource", "measured mineral resource", "indicated mineral resource" and "inferred mineral resource" are defined in and required to be disclosed by NI 43-101 and the CIM Standards; however, these terms are not defined terms under SEC Industry Guide 7 and are normally not permitted to be used in reports and registration statements filed with the U.S. Securities and Exchange Commission (the "SEC"). Investors are cautioned not to assume that all or any part of mineral deposits in these categories will ever be converted into reserves. "Inferred mineral resources" have a great amount of uncertainty as to their existence, and great uncertainty as to their economic and legal feasibility. It cannot be assumed that all or any part of an inferred mineral resource will ever be upgraded to a higher category. Under Canadian rules, estimates of inferred mineral resources may not form the basis of feasibility or pre-feasibility studies, except in very limited circumstances. Investors are cautioned not to assume that all or any part of a mineral resource exists, will ever be converted into a mineral reserve or is or will ever be economically or legally mineable or recovered.

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KLGOLD.COM TSX: KL

200 Bay Street, Suite 3120 RBC Plaza - South Tower Toronto ON M5J 2J1 Main Telephone: 416-840-7884 Darin Smith, Director, Corporate Development E:dsmith@klgold.com

44