Vancouver, British Columbia - Newsfile Corp. - September 9, 2026 - Founders Metals Inc. (TSXV: FDR) (OTCQX: FDMIF) (FSE: 9DL0) ("Founders" or the "Company") announces drill results from the Upper Antino-West Zone ("West Zone") at its Antino Gold Project ("Antino" or the "Project") in southeastern Suriname (Figure 1). Hole FR251 returned 27.0 metres (m) of 20.38 grams per tonne (g/t) gold (Au) from 100.0 m, including 10.0 m of 43.26 g/t Au. The West Zone is located 1.2 kilometres (km) west of the established Froyo Zone and was first intersected by discovery hole FR217, approximately 50 m to the north, which returned 53.1 m of 1.21 g/t Au from surface (announced June 23, 2026; Figure 2). Colin Padget, President & CEO, commented, "This ground has been part of Founders' land package for less than a year. Going from adding it to the project, to drilling 27.0 metres of 20.38 g/t gold in FR251, one of the best single intercepts in Antino's history, is a clear demonstration of the exploration potential of this district. That result came from a disciplined process: airborne geophysics, auger sampling and systematic follow-up of the resulting anomalies, the same approach we are applying across the rest of Antino." West Zone Highlights

• High-grade gold at West Zone: 27.0 m of 20.38 g/t Au from 100.0 m in hole FR251, including 10.0 m of 43.26 g/t Au from 100.0 m (Figure 3).
• Additional gold-bearing shear zone intersected to the west of FR251: 14.0 m of 1.63 g/t Au from 119.0 m, including 2.0 m of 9.86 g/t Au (FR250).
• Gold mineralization style similar to the Upper Antino-Froyo Zone: gold is associated with the same alteration, veining, and structural style that hosts the high-grade mineralization in the Froyo Zone, including the recently announced 28.0 m of 14.27 g/t Au in drill hole FR249 (See August 6, 2026 news release).
• The West Zone is a priority target for the remainder of the 2026 drill program. Five holes were completed in this follow-up program; drilling is ongoing.

The West Zone lies 1.2 km west of the Froyo Zone, in ground that had not been drilled before May 2026. Discovery hole FR217 returned 53.1 m of 1.21 g/t Au, hosted in steeply dipping, northwest-trending structures similar in nature to the geological setting at Froyo. Today's results cover five follow-up diamond drill holes (FR240, FR242, FR243, FR250 and FR251) designed to better understand the nature of this mineralization and its potential strike extent. Gold mineralization at the West Zone is associated with quartz-carbonate veining and pervasive sericite alteration. Visual estimates from core logging indicate up to 10% pyrite and/or pyrrhotite as the dominant sulphides with locally minor occurrences of visible gold within the main gold-bearing intervals. Transaction Update The Company's previously announced acquisition of Nana Resources N.V.'s remaining 30% interest in Lawa Gold N.V. is proceeding as planned, with closing expected in the near term. About Founders Metals Inc. Founders Metals Inc. is a Canadian gold exploration company building a district-scale gold camp in southeastern Suriname. The Company controls a 102,360-hectare contiguous land package in the Guiana Shield - the largest uninterrupted package of highly prospective greenstone belt geology in the region. Founders is executing one of the most active exploration programs in the global junior gold sector and is backed by a strategic partnership with Gold Fields Limited. The Company is committed to responsible exploration, strong community engagement, and disciplined capital allocation as it advances Suriname's next major gold camp. Figure 1: Antino Gold Project Property Map¹ To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/7574/313547_d2b6792dc4ba39ec_001full.jpg¹ Results shown in Figure 1 were previously disclosed by the Company in news releases dated August 24, 2023; July 22, 2024; September 24, 2024; November 7, 2024; December 11, 2024; February 20, 2025; April 23, 2025; June 23, 2025; June 24, 2025; December 11, 2025; January 22, 2026; April 2, 2026; April 30, 2026; June 23, 2026; July 15, 2026; and August 6, 2026, each available on the Company's website and under its profile at www.sedarplus.ca. Figure 2: Upper Antino Plan Map To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/7574/313547_d2b6792dc4ba39ec_002full.jpgFigure 3: West Zone Core Photos To view an enhanced version of this graphic, please visit: https://images.newsfilecorp.com/files/7574/313547_d2b6792dc4ba39ec_003full.jpgTable 1: West Zone Assay Results

Drillhole	From (m)	To (m)	Interval (m)	Au (g/t)
FR251	0.00	17.10	17.10	0.38
and	100.00	127.00	27.00	20.38
incl	100.00	110.00	10.00	43.26
and	137.00	143.00	6.00...