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# ex99 1

Source: https://www.sec.gov/Archives/edgar/data/1718405/000149315226010289/ex99-1.htm
Published: 2026-03-16T00:00:00+00:00
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## Content

# ex99 1
EX-99.1
2
ex99-1.htm
EX-99.1
Exhibit
99.1
Hycroft
Extends High-Grade Silver at Brimstone
542.78
g/t silver over 35.5 meters
Including
1187.29 g/t silver over 14.8m and 21,833 g/t silver over 0.4m
358.15
g/t silver over 11.2 meters
Including
662.03 g/t silver over 5.8m 7,330 g/t silver over 0.3m
WINNEMUCCA,
NV, March 16, 2026 – Hycroft Mining Holding Corporation (Nasdaq: HYMC) (“Hycroft” or “the Company”)
announces additional drill results from the 2025-2026 exploration drill program (the “Drill Program”) at the Hycroft Mine,
located in Nevada, USA a Tier-1 mining jurisdiction.
See
video interview with Alex Davidson, VP Exploration discussing drill results:
Drilling
Highlights: ( See appendix for full drill results and accompanying figures )
●
Confirmed
the Brimstone silver system extends approximately 150 meters deeper than previously identified and remains open at depth and in lateral
extensions (see Figures 1 and 3)
●
Encountered
the presence of strong mineralized fluid pathways and stockwork veining commonly associated with the high-grade Brimstone system
(see Figure 3)
●
Step-out
drilling expanded the known area of high-grade silver mineralization (see Figure 2)
●
Confirmed
the structural model interpretation of the high-grade system
Diane
Garrett, President and CEO commented: “These latest drill results are very exciting and continue to demonstrate the scale and potential
of the targets we are exploring. With every hole we drill, our understanding grows, and the broader story continues to unfold. We remain
focused and disciplined as we carry out the important work ahead to fully unlock Hycroft’s potential.”
Table
1. Drill Intercept Highlights (See Table 2 for all drill results)
GRADE
Hole ID
FROM
(meters)
TO
(meters)
INTERVAL
(meters)
Ag (g/t)
Au
(g/t)
AuEQ
(g/t)
AuEQ
(g/t)
Brimstone
H25D-6069
270.1
302.5
32.4
184.58
0.33
212.68
2.47
Including
285.0
289.2
4.2
1,185.25
0.98
1,269.48
14.74
H25D-6077
313.0
348.6
35.5
542.78
0.25
564.64
6.56
Including
326.8
341.6
14.8
1,187.29
0.19
1,203.61
13.98
Also Including
340.2
340.6
0.4
21,833.00
0.07
21,839.03
253.61
Brimstone Geophysics Anomaly
H25D-6074
581.1
588.7
7.6
24.86
0.05
29.17
0.34
H25D-6075
505.5
516.8
11.2
358.15
0.09
365.51
4.24
Including
505.5
511.3
5.8
662.03
0.12
672.03
7.80
Also Including
511.0
511.3
0.3
7,330.00
0.76
7,395.44
85.88
1
Alex
Davidson, Vice President, Exploration commented: “We are extremely pleased with the continued high-grade results from Brimstone.
These holes were designed in part to confirm the modeling of the high-grade structural controls and expand the known high-grade mineralization.
H25D-6069 (a 35-meter step out hole from H24D-6018 which returned 21.2 meters of 2,359.68 g/t silver) tested the southern portion of
the high-grade zone along the upper margin and returned substantial grade demonstrating the southern end of Brimstone remains open. Notably,
H25D-6077 (a 50-meter offset hole of H24D-6010 returning 18.2 meters of 1,987.35 g/t silver) returned an intercept of 35.5 meters of
542.78 g/t silver firmly establishing high-grade and structural continuity.
Drill
holes 6074, 6075, and 6075X were completed within the Induced Polarization (“IP”) geophysics anomaly to test the down-dip
extension of the Brimstone high-grade silver system targeting the fluid pathway and stockwork veining. The holes were drilled in a zone
between the east-west trending structures (MD_AD and Nicholes faults) in close proximity to the IP anomaly. All three holes showed strong
geochemical signatures, silver mineralization, and stockwork veining consistent with the high-grade silver mineralization observed at
the Brimstone system. Results confirm Brimstone remains open at depth and laterally.”
The
farthest step out hole, H25D-6075, drilled approximately 150 meters down-dip from the high-grade Brimstone system, returned 11.2 meters
of 385.15 g/t silver, confirming the extension of high-grade mineralization at depth. Holes H25D-6074 and H25D-6075X (wedge / directional
drilling hole of H25D-6075) also returned anomalous silver grades and displayed alteration and geochemical markers commonly associated
with alteration from a magmatic intrusion indicating we are still in an intermediate sulfidation system. This is consistent with the
high-grade Brimstone geochemistry and alteration package observed to date.
Drilling
is continuing to test the deeper portions of the Brimstone system including the potential feeder target. In addition, the lateral extents
of the Brimstone system remain open. These ongoing efforts are intended to further define and scale the continuity of the Brimstone system.
A
total of 11 holes were completed in 2025 (7 in Brimstone and 4 in Vortex) and all assays have been received with the exception of one
Vortex hole that is pending. To date in the 2026 drill program, 6 core holes have been completed (4 in Brimstone and 2 in Vortex) with
assays pending. There is currently one core rig at Brimstone and one core rig at Vortex with two additional core rigs arriving over the
next few months.
About
Hycroft Mining Holding Corporation
Hycroft
Mining Holding Corporation is a US-based gold and silver company exploring and developing the Hycroft Mine, among the world’s largest
precious metals deposits, located in northern Nevada, a Tier-1 mining jurisdiction. In
2023, Hycroft announced the discovery of two new high-grade silver systems within the known resource
area and the Company is engaged in a robust exploration drill program (2025-2026 drill program) designed to expand these two systems
in addition to targeting new opportunities. These discoveries represent a significant
value driver for the Hycroft Mine . In addition, after
a long history of oxide heap leach operations, the Company is focused on completing technical
studies to transition the Hycroft Mine into a milling operation for processing the sulfide
mineralization.
For
further information, please contact:
E:
info@hycroftmining.com
www.hycroftmining.com
2
Cautionary
Note Regarding Forward-Looking Statements
This
press release contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended,
Section 21E of the Securities Exchange Act of 1934, as amended, and the Private Securities Litigation Reform Act of 1995. All statements,
other than statements of historical fact, included in this press release and in public statements by our officers or representatives
that address activities, events or developments that we expect or anticipate will or may occur in the future are forward-looking statements.
These include, but are not limited to, statements regarding future business strategy, plans and goals, competitive strengths, the advancement
and development of the Hycroft Mine, the results and implications of metallurgical analysis and test work, and the expansion and growth
of our business.
Forward-looking
statements are often identified by future or conditional words such as “estimate,” “plan,” “anticipate,”
“expect,” “intend,” “believe,” “target,” “budget,” “may,” “can,”
“will,” “would,” “could,” “should,” “seeks,” “scheduled to” and
similar words or expressions but the absence of these words does not mean that a statement is not forward-looking. Forward-looking statements
are based on current expectations, estimates and projections that involve a number of risks and uncertainties, which could cause actual
results to differ materially from those reflected in the statements. The risks include, but are not limited to: (i) risks related to
changes in our operations at the Hycroft Mine, including risks associated with the cessation of mining operations at the Hycroft Mine;
uncertainties concerning estimates of mineral resources; risks related to the lack of a completed feasibility study; risks related to
metallurgical test work and process development; and risks related to our ability to re-establish commercially feasible mining and processing
operations; and (ii) industry-related risks, including fluctuations in the price of gold and silver; the commercial success of, and risks
related to, our exploration and development activities; uncertainties and risks related to our reliance on contractors and consultants;
and the availability and cost of equipment, supplies, energy or reagents.
Any
exploration target described in this press release does not represent, and should not be construed to be, an estimate of a mineral resource
or mineral reserve. Ranges of potential tonnage and grade (or quality) of an exploration target are conceptual in nature; there has been
insufficient exploration of the relevant property or properties to estimate a mineral resource; and it is uncertain if further exploration
will result in the estimation of a mineral resource.
These
and other risks may cause actual results to differ materially from those expressed or implied by the forward-looking statements, and
the occurrence of one or more of these events or circumstances, alone or in combination with others, may have a material adverse effect
on our business, cash flows, financial condition and results of operations. Please see the “Risk Factors” outlined in our
Annual Report on Form 10-K for the year ended December 31, 2025, and in other reports filed with the SEC, for more information about
these and other risks.
Given
these risks and uncertainties, you are cautioned not to place undue reliance on these forward-looking statements. Although we have attempted
to identify important factors that could cause actual results to differ materially from those described in forward-looking statements,
there may be other factors that cause results not to be as anticipated, estimated or intended. Although these forward-looking statements
are based on assumptions that we believe are reasonable when made, forward-looking statements are not guarantees of future performance
and actual results, performance or achievements may differ materially from those made in or suggested by the forward-looking statements
in this press release.
Any
forward-looking statements made in this press release speak only as of the date of this press release. We undertake no obligation to
update these forward-looking statements or to publicly announce the results of any revisions to any of those statements to reflect future
events or developments, except as required by law.
3
APPENDIX
Figure
1
Figure
2
4
Figure
3
Table
2 – Full Drill Results
GRADE
Hole ID
FROM
(meters)
TO
(meters)
INTERVAL
(meters)
Ag (g/t)
Au
(g/t)
AuEQ
(g/t)
AuEQ
(g/t)
Brimstone
H25D-6069
56.7
69.2
12.5
81.39
0.13
92.58
1.08
H25D-6069
109.6
125.4
15.8
6.09
0.59
56.90
0.66
H25D-6069
164.9
305.8
140.9
49.63
0.28
73.74
0.86
Including
270.1
302.5
32.4
184.58
0.33
212.68
2.47
Also Including
285.0
289.2
4.2
1,185.25
0.98
1,269.48
14.74
H25D-6077
127.1
148.4
21.3
5.76
0.49
47.95
0.56
H25D-6077
190.2
211.2
20.9
4.60
0.34
33.88
0.39
H25D-6077
232.7
349.6
116.9
167.84
0.28
191.95
2.23
Including
313.0
348.6
35.5
542.78
0.25
564.64
6.56
Also Including
326.8
341.6
14.8
1,187.29
0.19
1,203.61
13.98
Also Including
340.2
340.6
0.4
21,833.00
0.07
21,839.03
253.61
Brimstone Geophysics Anomaly
H25D-6074
85.8
153.9
68.0
7.73
0.23
27.54
0.32
H25D-6074
244.8
261.3
16.5
5.35
0.39
38.93
0.45
H25D-6074
485.2
508.3
23.1
3.29
0.28
27.40
0.32
H25D-6074
581.1
588.7
7.6
24.86
0.05
29.17
0.34
H25D-6075
5.8
105.6
99.8
7.16
0.21
25.24
0.29
H25D

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