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Kirkland Lake Discoveries Commences Drilling at Past-Producing Mirado Project, KL South

Exploration Programs

Kirkland Lake Discoveries Commences

Drilling at Past-Producing Mirado Project, KL

South

Toronto, Ontario--(Newsfile Corp. - April 1, 2026) -

Kirkland Lake Discoveries Corp. (TSXV: KLDC)

(OTCQB: KLKLF)

("KLDC" or the "Company") is pleased to announce the start of its 2026 diamond

drilling program at the past-producing Mirado property, located 20 km southeast of Kirkland Lake,

Ontario. This campaign marks the first systematic and fully integrated, large-scale exploration of the

asset in over a decade, aiming to expand known high-grade zones and test new structural targets.

A Systematic Approach to a Proven Asset

The Mirado property represents a brownfield exploration opportunity within the Abitibi Greenstone Belt

with a production history dating back to the 1920s. While historical development was frequently

interrupted by external macroeconomic cycles, resulting in a substantial historical dataset, the system

remains largely untested using modern exploration approaches.

1940s Era: Between 1937 and 1943, Yama Gold Mines produced 3,227 oz Au at a recovered

grade of 0.15 oz/t. Operations were suspended during the post-war period primarily due to the

fixed gold price environment of the time, which constrained underground development.

1980s Development: Golden Shield Resources conducted significant work in the mid-1980s,

including 32,000 ft of drilling and extensive underground drifting. Development was halted following

the 1987 market downturn, which limited the availability of venture capital for junior producers,

despite the presence of surface stockpiles.

Modern Consolidation: Following the consolidation of the property in 2012, further advancement

was deferred during the 2013 commodity price correction.

Kirkland Lake Discoveries is now revisiting Mirado with a systematic, fully integrated approach, applying

modern geological modeling and exploration techniques to advance a known gold system with a well-

established but historically phased exploration record.

Figure 1 -

Historical timeline of Mirado property.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/5701/290816_kirkland.jpg

Mineralization Style and Geological Context

The Mirado system comprises two distinct mineralization styles associated with the North and South

Zones. The North Zone hosts semi-conformable, stratigraphically controlled sulphide mineralization

within felsic volcaniclastics, while the South Zone is defined by discordant, structurally controlled gold

mineralization hosted in quartz-chlorite vein arrays. Together, these styles reflect a stratigraphic system

that has been overprinted and locally enhanced by later structural controls.

The following intercepts represent the historical and modern data points that define the core mineralized

zones and serve as the primary targets for the 2026 confirmatory drill program:

Table 1

-

Historical Gold Assay

Hole ID

From

(m)

To

(m)

Length

(m)

Au (g/t)

uncut

Result Source*

U86-22

1.7

51.6

49.9

36.94

32D04SW0141

MD13-07

86.2

95.7

9.5

59.20

Orecap Invest Corp - 30-Apr-2013

Including

91.3

92.3

1.0

559.00

Orecap Invest Corp - 30-Apr-2013

85-06

29.0

70.5

41.5

11.55

32D04SW0264

MD13-28

18.5

50.0

31.5

10.90

Orecap Invest Corp - 20-Jun-2013

including

26.5

32.5

6.0

52.20

Orecap Invest Corp - 20-Jun-2013

U86-25

4.4

74.1

69.7

3.38

32D04SW0141

86-57

10.7

47.9

37.2

6.06

32D04SW0141

85-15

63.3

89.4

26.1

8.62

32D04SW0264

85-05

13.7

137.6

123.9

1.65

32D04SW0264

MD13-30

90.3

109.5

19.2

10.20

Orecap Invest Corp - 13-Aug-2013

Including

100.2

106.1

5.9

27.70

Orecap Invest Corp - 13-Aug-2013

MD13-19

77.0

91.5

14.5

13.50

Orecap Invest Corp - 16-May-2013

Including

82.1

88.0

5.9

32.50

Orecap Invest Corp - 16-May-2013

U86-19

4.0

49.1

45.1

3.75

32D04SW0141

1050-30

70.1

84.0

13.9

11.86

32D04SW0201

1050-28

41.8

96.0

54.2

2.97

32D04SW0201

86-62

6.1

47.9

41.8

3.88

32D04SW0141

86-66

7.8

45.8

38

3.57

32D04SW0141

MD13-12

62.8

93.0

30.2

4.03

Orecap Invest Corp - 30-Apr-2013

Including

62.8

71.0

8.2

10.58

Orecap Invest Corp - 30-Apr-2013

MD13-06

1.5

62.8

61.3

1.97

Orecap Invest Corp - 04-Mar-2013

MD13-02

33.1

59.8

26.7

4.38

Orecap Invest Corp - 20-Mar-2013

Including

56.8

57.8

1.0

83.50

Orecap Invest Corp - 20-Mar-2013

MD13-02

265.5

267.5

2.0

48.60

Orecap Invest Corp - 20-Mar-2013

MD13-01

21.3

31.6

10.3

8.56

Orecap Invest Corp - 20-Feb-2013

Including

24.0

24.6

0.6

137.00

Orecap Invest Corp - 20-Feb-2013

1050-50

57.0

78.0

21.0

4.08

32D04SW0201

MD13-10

257.7

289.1

31.4

2.39

Orecap Invest Corp - 10-Apr-2013

Including

265.2

284.7

19.5

3.65

Orecap Invest Corp - 10-Apr-2013

MD13-05

150.0

158.8

8.8

7.50

Orecap Invest Corp - 10-Apr-2013

Including

154.5

156.0

1.5

42.70

Orecap Invest Corp - 10-Apr-2013

MD13-14

311.7

325.2

13.5

4.72

Orecap Invest Corp - 30-Apr-2013

MD13-15

60.1

94.5

34.4

1.80

Orecap Invest Corp - 30-Apr-2013

MD13-03

104.1

107.9

3.8

15.86

Orecap Invest Corp - 04-Mar-2013

MD13-03

136.2

182.3

46.1

2.74

Orecap Invest Corp - 04-Mar-2013

Including

143.4

170.3

26.9

4.36

Orecap Invest Corp - 04-Mar-2013

MD13-25

42.9

76.8

33.9

1.48

Orecap Invest Corp - 20-Jun-2013

1050-32

18.0

59.0

41.0

1.11

32D04SW0201

1050-32

103.5

150.0

46.5

1.95

32D04SW0201

MD13-11

14.0

57.3

43.3

1.01

Orecap Invest Corp - 30-Apr-2013

86-26

3.1

23.5

20.4

1.31

32D04SW0141

Hole ID

From

(m)

To

(m)

Length

(m)

Au (g/t)

uncut

Result Source*

* Links to the Result Sources can be found at the end of this document.

Note on historical data:

The drill results presented in the list above (Table 1) are

historical in nature

and have been compiled from historical drill logs, government assessment reports, and previous

operator records and may include uncapped values. These results have not been verified by a "Qualified

Person" (QP) as defined by

National Instrument 43-101 (NI 43-101)

and should not be relied upon as

current. The Company has not yet conducted sufficient re-assaying or independent validation of the

original drill core or lab certificates to ensure the accuracy or validity of these results. While Kirkland

Lake Discoveries Corp. believes these records provide an important indication of the property's

mineralization potential, they are provided for informational purposes only until modern confirmatory

drilling and QA/QC protocols are completed during the 2026 campaign.

CEO's Vision: A New Era for Mirado

"The Mirado property has a history of technical success that was frequently interrupted by external

market cycles rather than geological outcomes," said

Stefan Sklepowicz, CEO of Kirkland Lake

Discoveries Corp.

"Our objective for the 2026 campaign is to apply modern exploration standards to a

system that has historically been advanced in a fragmented manner. By integrating ninety years of data

into a cohesive model, we aim to identify the primary controls on mineralization and systematically test

for extensions at depth. This program represents a disciplined step forward in defining the true scale and

potential of the Mirado asset."

Expedited Results: The Move to Paragon & PhotonAssay™

To ensure rapid market communication and superior analytical precision, KLDC has made the strategic

decision to move forward with

Paragon Geochemical

to utilize

Chrysos PhotonAssay™

technology

for the 2026 program at KL South.

Unlike traditional fire assay, PhotonAssay™ uses high-energy X-rays to excite atomic nuclei, providing a

non-destructive, faster, and more environmentally friendly analysis of larger (500g) samples. This is

particularly critical for the Mirado property, where the presence of "nuggety" or coarse gold can lead to

grade variability in smaller samples. By utilizing this state-of-the-art technology, the Company expects to

significantly reduce turnaround times for drill results while improving the statistical reliability of high-grade

intercepts.

Objectives for 2026

The 2026 program is designed to move the Mirado property toward a modern resource update through

a disciplined, four-pronged approach:

Database Validation and Infill:

Verify historical high-grade logs, execute infill drilling and provide

the modern data density required for NI 43-101 compliance.

Targeted Depth Extensions:

Test projected high-grade chutes below 250 where most historical

drilling stopped.

Strike and Zone Expansion:

Investigate the lateral continuity of the MZ Zone to the west and

evaluate the polymetallic potential of the North Zone to identify incremental growth opportunities.

Structural Synthesis:

Integrate 90 years of fragmented historical records into a unified 3D

geological model to refine drill targeting and identify potential sub-surface extensions overlooked

by previous operators.

By operating in a Tier-1 mining jurisdiction with a focused exploration budget, Kirkland Lake Discoveries

Corp. is committed to advancing Mirado from a historical prospect into a modern, well-defined gold

asset in the Abitibi Greenstone Belt.

Qualified Person

The technical information contained in this news release has been reviewed and approved by

Benjamin

Cleland, P.Geo., Vice-President Exploration

, who is a Qualified Person as defined by National

Instrument 43-101 -

Standards of Disclosure for Mineral Projects

.

About Kirkland Lake Discoveries Corp.

Kirkland Lake Discoveries Corp. (TSXV: KLDC) (OTCQB: KLKLF) has assembled a 420-km²

exploration portfolio in the Kirkland Lake region of Ontario's Abitibi Greenstone Belt, one of the most

prolific mining districts in the world. The Company's properties span key fault zones, geophysical

anomalies, and volcanic-sedimentary contacts within the Blake River Group, a highly prospective

assemblage known to host both gold and polymetallic massive-sulphide deposits.

With exploration permits now in place, KLDC is positioned to advance a strong pipeline of drill-ready

targets at KL South, KL West and KL East, supported by multiple anomalous soil trends, historical

mineral showings, and structurally controlled intersections.

For additional information, please contact:

Stefan Sklepowicz

Chief Executive Officer

Phone:

+1 226-979-3515

Email:

[email protected]

Website:

www.kirklandlakediscoveries.com

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this

release.

Forward-Looking Statements

This news release contains "forward-looking statements" within the

meaning of applicable securities legislation. All statements, other than statements of historical fact,

are forward-looking statements. Forward-looking statements in this news release include, but are not

limited to, statements with respect to the Company's 2026 drilling program, the expansion of high-

grade zones, the validation of historical data, and the potential for a mineral resource. Generally,

forward-looking statements can be identified by the use of forward-looking terminology such as

"plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts",

"intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases

or state that certain actions, events or results "may", "could", "would", "might" or "will be taken",

"occur" or "be achieved".

Forward-looking statements are subject to known and unknown risks, uncertainties and other factors

that may cause the actual results, level of activity, performance or achievements of the Company to

be materially different from those expressed or implied by such forward-looking statements, including

but not limited to: the results of exploration and drilling activities; the reliability of historical data; the

price of gold and other commodities; and general economic, market or business conditions. Although

the Company has attempted to identify important factors that could cause actual results to differ

materially from those contained in forward-looking statements, there may be other factors that cause

results not to be as anticipated, estimated or intended. There can be no assurance that such

statements will prove to be accurate, as actual results and future events could differ materially from

those anticipated in such statements. Accordingly, readers should not place undue reliance on

forward-looking statements. The Company does not undertake to update any forward-looking

statements that are incorporated by reference herein, except in accordance with applicable securities

laws.

* Links for Result Sources

Assessment Records

Record #

Link

32D04SW0141

https://www.geologyontario.mines.gov.on.ca/assessment/32D04SW0141

32D04SW0264

https://www.geologyontario.mines.gov.on.ca/assessment/32D04SW0264

32D04SW0201

https://www.geologyontario.mines.gov.on.ca/assessment/32D04SW0201

Orecap News Releases

Date of Release

Link

04-Mar-13

https://www.sedarplus.ca/csa-party/records/document.html?

id=0497dbbdeecfc1a1e0ab05549a0731a3273156aa3d3a959566516f5a139cb8f4

20-Mar-13

https://www.sedarplus.ca/csa-party/records/document.html?

id=4f945e81dd4aaee27c57c5659e5b62952841a4e1653c70707660ba3fafbd4bf2

10-Apr-13

https://www.sedarplus.ca/csa-party/records/document.html?

id=402d96c7960c84255e521559d4f1c4727804b84da58305abffc8809d7f6f66cd

30-Apr-13

https://www.sedarplus.ca/csa-party/records/document.html?

id=1a145aa3016aeb805923cdc5934c0d3d1d6b9639d23934c3cc0ce930f76dca95

16-May-13

https://www.sedarplus.ca/csa-party/records/document.html?

id=4e7e94d4d51c5239005d34fd2922ba6b1a63f8a6434e0d91b4772517c557d04a

20-Jun-13

https://www.sedarplus.ca/csa-party/records/document.html?

id=75931993e9606a2c27ed4420c88a384045dca69fa1699a80d8163d89ac4844c0

13-Aug-13

https://www.sedarplus.ca/csa-party/records/document.html?

id=987f485e5ffa3529fe43fc5bcf726cb5b8e9755c220c01bdf924a7610b1c6bb8

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/290816