Mr. Ari Sussman reports

COLLECTIVE MINING TO ANNOUNCE MAIDEN MINERAL RESOURCE FOR ITS APOLLO DEPOSIT AFTER MARKET CLOSE; CONFERENCE CALL SCHEDULED FOR SEPTEMBER 9

Collective Mining Ltd. will release an initial mineral resource for the Apollo system at is Guayabales project in Caldas, Colombia, following the close of markets today, Sept. 8, 2026.

The company will host a webcast and conference call on Sept. 9, 2026, at 8 a.m. Eastern Time. Members of Collective's senior management team will discuss the mineral resource, key growth opportunities and the company's planned work programs, followed by a question-and-answer session.

The presentation will be led by members of Collective's senior management and technical team, including:

• Ari Sussman, executive chairman;
• Ned Jalil, PEng, chief executive officer;
• Omar Ossma, president;
• David Reading, MSc, economic geology, special adviser;
• Eduardo Cervantes, vice-president, corporate development and investor relations.

Webcast and conference call details

Date:  Wednesday, Sept. 9, 2026

Time:  8 a.m. Eastern Time

Local:  1-416-945-7677, conference call ID No. 60464

Toll-free (North America):  1-888-699-1199, conference call ID No. 60464

Participants are encouraged to submit questions through the webcast platform during the presentation. Questions may also be taken from telephone participants during the live question-and-answer session.

About Collective Mining Ltd.

Founded by the team that developed and sold Continental Gold Inc. to Zijin Mining for approximately $1.4-billion in enterprise value, Collective is a gold, silver, copper and tungsten exploration company with projects in Caldas, Colombia. The company's two projects are located directly within an established mining camp with 10 fully permitted and operating mines.

The company's flagship project, Guayabales, is anchored by Apollo, a large-scale, bulk-tonnage and high-grade gold-silver-copper-tungsten system. The company's objectives at the Guayabales project are to expand the newly discovered high-grade Ramp zone along strike and to depth, drill test the new outcropping Shallow Halo zone (formerly known as the Northern Apollo oxidized area), drill the recently granted licence covering the northwestern extension of the Trap target, and drill a series of greenfield generated targets across the property.

Management, insiders, a strategic investor, and close family and friends own 45.2 per cent of the outstanding shares of the company, and, as a result, are fully aligned with shareholders. The company is listed on both the Nasdaq Stock Market and Toronto Stock Exchange under the trading symbol CNL.

We seek Safe Harbor.