Tectonic Metals Drills 272 Metres of 0.50 g/t Au and 277 Metres of 0.49 g/t Au; Confirms Bulk-Tonnage Potential at Heap-Leachable Chicken Mountain, Flat Gold Project, Alaska

Unconstrained Growth Potential: 3.3 km Drilled Mineralized Strike x 700 m Width x 300 m Vertical Depth and Remaining Open in All Directions

100% Drill Success Continues: 191 of 191 Drill Holes Intersecting Gold Mineralization

VANCOUVER, BC / ACCESS Newswire / February 5, 2026 / Tectonic Metals Inc. ("Tectonic" or the "Company") (TSXV:TECT)(OTCQB:TETOF) today announced final assay results from the 2025 drill program at Chicken Mountain. Today's results delivered thick, at or near-surface intercepts that reinforce Chicken Mountain as a bulk-tonnage, heap leachable Reduced Intrusion Related Gold System ("RIRGS") within the Company's flagship 99,800-acre Flat Gold Project ("Flat") in Southwest Alaska.

The 2025 drilling program has successfully advanced Chicken Mountain from an exploration target into a kilometre-scale resource growth opportunity, expanding the continuously mineralized footprint and delineating higher-grade corridors that may support potential starter-pit development scenarios.

Tectonic plans to resume drilling in early May 2026, and additional metallurgical test work is now underway, including 2-inch crush heap-leach column tests to investigate the viability of run-of-mine ("ROM") gold processing. A more detailed news release outlining the Company's 2026 plans and objectives is expected to be announced in the coming months.

CEO Commentary

"Chicken Mountain demonstrates a combination of scale, continuity and favorable metallurgy in a bulk-tonnage gold system. Unlike narrow vein deposits that rely on selective mining, this style of mineralization has the potential to support simpler, straightforward open-pit development, with broad, continuous zones that begin at surface and remain open in all directions."

What differentiates Chicken Mountain is the convergence of three key value drivers. First, scale: we've defined approximately 3.3 kilometres of mineralized strike to date, with widths approaching 700 metres, while drill testing only a fraction of the mapped intrusive complex. Second, predictability: a 100% drill success rate across 191 holes demonstrates a fertile and strong mineralizing system that can be targeted effectively. Third, metallurgy: previously reported heap-leach recoveries of up to 96%, together with ongoing work evaluating run-of-mine potential, point to a processing profile with meaningful capital and operating advantages."

"Within this large mineralized, envelope, we've identified multiple higher-grade corridors that could represent potential mining starter-pit opportunities. Beyond the intrusion itself, the hornfelsed sedimentary rocks surrounding Chicken Mountain represent an additional, untested and underexplored opportunity. At Black Creek, located 6 km away, drilling intersected 4.50 g/t Au over 48.77 m with 7.79 g/t Au over 24.38 m hosted in hornfels - the same prospective host rock that surrounds Chicken Mountain."

"As we move forward, our focus is clear: continued step-out drilling to define the ultimate scale of the Chicken mountain RIRGS system, advancing metallurgical work toward a potential run-of-mine flowsheet, and progressing toward a maiden mineral resource estimate. Each of these workstreams is aimed at systematically de-risking Chicken Mountain while preserving its significant growth potential."

Assay results from 16 drill holes are reported herein - 9 diamond core holes and 7 reverse circulation ("RC") holes - representing approximately 3,535 metres ("m") of drilling from the Company's 18,373 m 2025 program. Drilling targeted step-out expansion and early-stage resource delineation in the central area of the Chicken Mountain intrusion. All assay results from the Companies 2025 drill program are now reported.

Drill Highlights

CMD25-031: Entire Drill Hole Mineralized

• 0.70 g/t Au over 32.00 m, and

  15.05 g/t Au over 1.00 m, and

  1.14 g/t Au over 19.00 m, all within

  0.50 g/t Au over 272.00 m

  Diamond core drill hole; total hole length 303.58 m

CMD25-028:Entire Drill Hole Mineralized

• 1.02 g/t Au over 11.00 m, and

  1.27 g/t Au over 13.00 m, and

  1.16 g/t Au over 12.00 m, within

  0.74 g/t Au over 61.00 m, and all within

  0.49 g/t Au over 277.55 m

  Ended in mineralization; total hole length 327.6 m (diamond core drill hole)

CMD25-021

• 2.20 g/t Au over 14.00 m, within

  1.39 g/t Au over 24.00 m, all within

  0.44 g/t Au over 192.48 m

  Ended in mineralization with the final 5.00 m at 2.45 g/t Au; total hole length 297.48 m (diamond core drill hole)

CMD25-023

• 2.33 g/t Au over 10.00 m, within

  1.09 g/t Au over 29.00 m, all within

  0.59 g/t Au over 120.00 m

  Diamond core drill holes; total hole length 306.63 m

CMD25-019

• 0.82 g/t Au over 52.00 m, and

  1.18 g/t Au over 25.00 m, and

  0.92 g/t Au over 26.00 m, and

  0.92 g/t Au over 29.00 m, all within

  0.58 g/t Au over 186.06 m

  Diamond drill core total hole length 303.58 m

CMR25-118

• 5.18 g/t Au over 4.57 m, within

  2.08 g/t Au over 12.19 m

  Ended in in mineralization; total hole 48.77 m (RC drill)

CMD25-018

• 0.86 g/t Au over 23.00 m, and

  0.86 g/t Au over 17.00 m, all within

  0.49 g/t Au over 141.00 m

  Ended in mineralization; total hole length 361.00 m (diamond drill core)

CMD25-025

• 0.77 g/t Au over 22.65 m, all within

  0.44 g/t Au over 144.00 m

  Ended in mineralization; diamond drill core total hole length 352.96 m

Chicken Mountain Video and Figures

• Maps: Drill plan maps and images can be found below and by clicking here to view: Click Here to View Plan Maps and Images

2025 Drilling Successfully Transitions Chicken Mountain from Exploration Target into a Multi-kilometre Gold Resource Growth Opportunity

1. Scale & Continuity: Chicken Mountain is interpreted as a Reduced Intrusion-Related Gold System hosted within a receptive monzonitic intrusive complex. Drilling has defined a mineralized envelope measuring 3.3 km in strike, up to 700 m in width, and extending to 300 m vertical depth, see figure 1 and 2.

Multiple drill holes intersect ~275 m of continuous gold mineralization starting at surface and indicating a coherent body of mineralized rock, see figures 5 and 6.

While drilling to date has defined a significant envelope of mineralization, the broader Chicken Mountain system extends well beyond current drilling:

• Geophysical intrusive footprint: ~6.5 km × 6.0 km

Untested Hornfels Target: The Chicken Mountain intrusion is surrounded by hundreds of metres of hornfels, a baked sedimentary rock that commonly hosts gold in intrusion-related systems. This prospective host rock remains entirely untested at Chicken Mountain but has been validated at Tectonic's Black Creek intrusion target, located 6 km from Chicken Mountain, where recent drilling intersected 4.50 g/t Au over 48.77 m, including 7.79 g/t Au over 24.38 m (see January 29, 2025, news release) confirming the fertility of hornfels units at Flat.

• Results reported from two drill fences L1 (4 core holes) and L2 (6 RC and 4 core holes) drilled across the Chicken Mountain intrusion.

• Width of mineralization envelope along both drilled sections is 700 m.

• Core drilling on both sections confirms mineralization to 300 m vertical depth and remains open.

• Multiple holes ended in mineralization (see Tables 1 and 2), supporting potential for down-dip and along-strike expansion.

Results Summary

A summary of the results released today for the 7 RC holes are presented by drill section in Table 1, and a summary of the 9 core results are presented in Table 2. Data pertaining to locations of drill holes included in the announcement are presented in Table 3. Full assay results for the 7 RC and 9 core results can be found at this link: Click Here for Full Assay Results.

Chicken Mountain Video and Figures: Please watch a video highlighting the scale and potential of the Chicken Mountain: Click Here to View Video

Drill Plan Maps and Images: Click Here to View. Select images below.

Exploration Outlook 2026

Chicken Mountain/Alpha Bowl Drilling:

• Expansion and targeted drilling of six identified higher-grade corridors for grade-tonnage optimization.

• Systematic step-out drilling to define system limits and test depth extensions.

• Infill drilling to support maiden mineral resource estimate.

Regional Target Testing:

• Follow-up expansion drilling at Black Creek (4.50 g/t Au over 48.77m), Golden Apex and Jam - each representing kilometer-scale intrusive targets.

• Surficial geochemical sampling across the property.

• Demonstrate Flat as a potential district-scale gold camp, not a single-intrusion story.

Technical De-Risking:

• Metallurgical optimization additional testing, including column testing, to evaluate crush size reduction and ROM potential.

• 3D geological, geochemical, and structural modeling to refine drill targeting.

• Continued engagement with independent mineral resource and engineering groups to advance pre-development studies.

To learn more about the 2025 Drill Programs, click here: Tectonic Metals Delivers Record 18,372 Metres Across 125 Drill Holes at Flat Gold Project, Alaska

Figure 1: Oblique view of Chicken Mountain and Alpha Bowl, drill results assays can be viewed at: CLICK HERE TO VIEW FIGURE 1

Figure 2: Plan View, new drill results assays can be viewed at: CLICK HERE TO VIEW FIGURE 2

Figure 3: Long Section View Looking Northeast, drill results assays can be viewed at: CLICK HERE TO VIEW FIGURE 3

Figure 4: Plan View of Chicken Mountain, highlighting the higher-grade corridors, drilling lines, drill results assays can be viewed at: CLICK HERE TO VIEW FIGURE 4

Figure 5: Cross Section Looking North of Drilling Line 1, highlighting drill results and higher grade corridors can be viewed at: CLICK HERE TO VIEW FIGURE 5

Figure 6: Cross Section Looking North of Drilling Line 2, highlighting drill results and higher grade corridors can be viewed at: CLICK HERE TO VIEW FIGURE 6

Table 1. Significant Highlights Chicken Mountain RC Drill Results Line 1*

*All reported intercepts are reported as downhole lengths, as insufficient data exists to determine true widths. Select composites utilizing 0.10, 0.30 or 0.50 g/t Au cut-off with a maximum 3.2m continuous (two sample) below the cut-off inclusion.

Table 1. Significant Highlights Chicken Mountain RC Drill Results Line 2*