Cornerstone Capital Resources Inc. provided a drilling update for the Tandayama-Ameríca (“TAM”) porphyry copper-gold satellite deposit located 3km north of the Alpala Deposit1 at its Cascabel copper-gold porphyry joint venture project in northern Ecuador in which Cornerstone has a 15% interest financed through to completion of a feasibility study and repayable out of Cornerstone's share of project earnings, plus 6.86% of the shares of joint venture partner and Project operator SolGold Plc, for a total direct and indirect interest in Cascabel of 20.8%. TAM currently contains a Mineral Resource Estimate (“MRE”) of 233.0Mt @ 0.23% Cu and 0.16 g/t Au (0.33% copper equivalent (CuEq)3) containing 0.53Mt Cu and 1.20Moz Au in the Indicated category, plus 197.0Mt @ 0.27% Cu and 0.20 g/t Au (0.39% CuEq) containing 0.52Mt Cu and 1.24Moz Au in the Inferred category. The TAM MRE was estimated from a dataset including drill holes 1-23, plus 458m of rock-saw channel assays across hard-rock surface outcrops.

A total of 30,925m of diamond drilling, in 41 drill holes, has now been completed at TAM deposit, including a total of 29,632m of final assay results. Additional resources being identified at TAM continue to provide a strategic fit towards the development of the Cascabel property as a whole. A TAM deposit MRE update is currently underway, assessing additional drill holes 19-40, equating to an additional 15,065.6m of final assays results received since the release of the maiden MRE in October 2021.

Assay results from holes 19-40 extend mineralization potentially mineable by both open pit and underground bulk mining methods and suggest capacity for resource growth. Mineralization remains open both along strike north and south, and at depth in the southeast. Highlights of intersections4 achieved from holes 25-40 include: Hole 26: 769.9m5 @ 0.23% Cu and 0.14g/t Au (0.32% CuEq) (from 608m, open at depth), incl.

382m @ 0.29% Cu and 0.21g/t Au (0.43% CuEq) (from 824m) and 80m @ 0.30% Cu and 0.48g/t Au (0.61% CuEq) from 1120m. Hole 28: 588.0m @ 0.28% Cu and 0.20 Au (0.41% CuEq) from 440m, incl. 140m @ 0.49% Cu and 0.47g/t Au (0.80% CuEq) from 602m and 74m @ 0.72% Cu and 0.72g/t Au (1.18% CuEq) from 666m.

Hole 32: 902.0m @ 0.22% Cu and 0.09g/t Au (0.28% CuEq) from 676m, incl. 190m @ 0.33% Cu and 0.13g/t Au (0.41% CuEq) from 900m and 56m @ 0.46% Cu and 0.18g/t Au (0.57% CuEq) from 1,016m. Hole 35: 334.0m @ 0.27% Cu and 0.23g/t Au (0.42% CuEq) from 442m, incl.

168m @ 0.44% Cu and 0.37g/t Au (0.68% CuEq) from 592m and 80m @ 0.63% Cu and 0.61g/t Au (1.03 CuEq) from 622m. Hole 13: 1,010m @ 0.30% Cu and 0.34g/t Au (0.55% CuEq) from 194m, incl. 392m @ 0.42% Cu and 0.68g/t Au (0.93% CuEq) from 246m and 132m @ 0.48% Cu and 0.81g/t Au (1.09% CuEq) from 498m.

Hole 24: 506m @ 0.29% Cu and 0.39g/t Au (0.55% CuEq) from 324m, incl. 220m @ 0.32% Cu and 0.61g/t Au (0.72% CuEq) and 62m @ 0.47% Cu and 0.88g/t Au (1.05% CuEq) from 326m.