UAMY

SEC source: 0001104659-26-104378 · tm2624616-1_4seq1.xml · nonDerivative · entry 1

Carrabba Joseph A · CIK 0001328270 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 198,401

SEC source: 0001104659-26-104644 · tm2624693-1_4seq1.xml · nonDerivative · entry 1

Bardswich Lloyd · CIK 0001399729 · Director · Dir, EVP & Chief Mining Eng

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 932,881

SEC source: 0001104659-26-103998 · tm2624415-1_4seq1.xml · nonDerivative · entry 1

Aguirre Blaise A. · CIK 0001533482 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 878,092

SEC source: 0001104659-26-103384 · tm2624326-1_4seq1.xml · nonDerivative · entry 1

EVANS GARY C · CIK 0001191410 · Director · Chairman & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,590,028

SEC source: 0001104659-26-075020 · tm2618177-1_4seq1.xml · nonDerivative · entry 1

Marinelli Jon R · CIK 0002100537 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,500

F1 · price: The price reported in Column 4 is a weighted average purchase price. This shares were purchased in multiple transactions at prices ranging from $7.41 to $7.50, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the Issuer, or the SEC staff, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

SEC source: 0001104659-26-070202 · tm2616858-1_4seq1.xml · nonDerivative · entry 1

ISAAK RICHARD R · CIK 0001398052 · SVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 344,376

SEC source: 0001104659-26-039332 · tm2611091-1_4seq1.xml · nonDerivative · entry 1

Bardswich Lloyd · CIK 0001399729 · Director · Dir, EVP & Chief Mining Eng

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 877,483

SEC source: 0001104659-26-038373 · tm2610888-1_4seq1.xml · nonDerivative · entry 5

Aguirre Blaise A. · CIK 0001533482 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 845,754

SEC source: 0001104659-26-038373 · tm2610888-1_4seq1.xml · nonDerivative · entry 4

Aguirre Blaise A. · CIK 0001533482 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 848,754

SEC source: 0001104659-26-038373 · tm2610888-1_4seq1.xml · nonDerivative · entry 3

Aguirre Blaise A. · CIK 0001533482 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 858,354

SEC source: 0001104659-26-038373 · tm2610888-1_4seq1.xml · nonDerivative · entry 2

Aguirre Blaise A. · CIK 0001533482 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 866,754

SEC source: 0001104659-26-038373 · tm2610888-1_4seq1.xml · nonDerivative · entry 1

Aguirre Blaise A. · CIK 0001533482 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 867,754

SEC source: 0001104659-26-036830 · tm2610645-1_4seq1.xml · nonDerivative · entry 3

Aguirre Blaise A. · CIK 0001533482 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 872,754

SEC source: 0001104659-26-036830 · tm2610645-1_4seq1.xml · nonDerivative · entry 2

Aguirre Blaise A. · CIK 0001533482 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 878,127

SEC source: 0001104659-26-037595 · tm2610749-1_4seq1.xml · nonDerivative · entry 2

Bardswich Lloyd · CIK 0001399729 · Director · Dir, EVP & Chief Mining Eng

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 937,355

SEC source: 0001104659-26-035918 · tm2610082-2_4seq1.xml · nonDerivative · entry 2

ISAAK RICHARD R · CIK 0001398052 · SVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 354,886

SEC source: 0001104659-26-037595 · tm2610749-1_4seq1.xml · nonDerivative · entry 1

Bardswich Lloyd · CIK 0001399729 · Director · Dir, EVP & Chief Mining Eng

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 973,536

SEC source: 0001104659-26-034718 · tm269859-1_4seq1.xml · nonDerivative · entry 5

Fink Jeffrey Russell · CIK 0002029601 · VP, General Manager, BRZ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 108,656

SEC source: 0001104659-26-034718 · tm269859-1_4seq1.xml · nonDerivative · entry 4

Fink Jeffrey Russell · CIK 0002029601 · VP, General Manager, BRZ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 112,711

SEC source: 0001104659-26-034718 · tm269859-1_4seq1.xml · nonDerivative · entry 3

Fink Jeffrey Russell · CIK 0002029601 · VP, General Manager, BRZ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 122,711

SEC source: 0001104659-26-035918 · tm2610082-2_4seq1.xml · nonDerivative · entry 1

ISAAK RICHARD R · CIK 0001398052 · SVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 408,220

SEC source: 0001104659-26-035834 · tm2610082-1_4seq1.xml · nonDerivative · entry 4

EVANS GARY C · CIK 0001191410 · Director · Chairman & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,231,951

SEC source: 0001104659-26-035834 · tm2610082-1_4seq1.xml · nonDerivative · entry 3

EVANS GARY C · CIK 0001191410 · Director · Chairman & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,331,951

SEC source: 0001104659-26-035834 · tm2610082-1_4seq1.xml · nonDerivative · entry 2

EVANS GARY C · CIK 0001191410 · Director · Chairman & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,431,951

SEC source: 0001104659-26-035834 · tm2610082-1_4seq1.xml · nonDerivative · entry 1

EVANS GARY C · CIK 0001191410 · Director · Chairman & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,531,951

SEC source: 0001104659-26-036830 · tm2610645-1_4seq1.xml · nonDerivative · entry 1

Aguirre Blaise A. · CIK 0001533482 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 884,466

SEC source: 0001104659-26-034718 · tm269859-1_4seq1.xml · nonDerivative · entry 2

Fink Jeffrey Russell · CIK 0002029601 · VP, General Manager, BRZ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 132,711

SEC source: 0001104659-26-034718 · tm269859-1_4seq1.xml · nonDerivative · entry 1

Fink Jeffrey Russell · CIK 0002029601 · VP, General Manager, BRZ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,711

SEC source: 0001104659-26-039356 · tm2611091-2_4seq1.xml · nonDerivative · entry 1

Pagen Melissa · CIK 0002025257 · President & COO of BRZ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,825

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.05 to $9.26, inclusive. For all transactions reported in this Form 4 utilizing a weighted-average price, the reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

SEC source: 0001104659-26-006263 · tm263951-3_4seq1.xml · derivative · entry 2

MCMANUS MICHAEL A JR · CIK 0001051997 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,259 shares

Expires not disclosed

F2 · security: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · shares: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · price: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · balance_after: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

SEC source: 0001104659-26-006263 · tm263951-3_4seq1.xml · nonDerivative · entry 1

MCMANUS MICHAEL A JR · CIK 0001051997 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 538,600

F1 · security: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 6,635 shares of the 19,903 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 6,635 shares of the 19,903 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

SEC source: 0001104659-26-006260 · tm263951-2_4seq1.xml · derivative · entry 2

Carrabba Joseph A · CIK 0001328270 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,259 shares

Expires not disclosed

F2 · security: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · shares: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · price: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · balance_after: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

SEC source: 0001104659-26-006260 · tm263951-2_4seq1.xml · nonDerivative · entry 1

Carrabba Joseph A · CIK 0001328270 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 112,702

F1 · security: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 6,635 shares of the 19,903 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 6,635 shares of the 19,903 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

SEC source: 0001104659-26-006259 · tm263951-1_4seq1.xml · derivative · entry 2

Aguirre Blaise A. · CIK 0001533482 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,259 shares

Expires not disclosed

F2 · security: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · shares: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · price: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · balance_after: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 4,087 shares of the 12,259 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

SEC source: 0001104659-26-006259 · tm263951-1_4seq1.xml · nonDerivative · entry 1

Aguirre Blaise A. · CIK 0001533482 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 496,001

F1 · security: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 6,635 shares of the 19,903 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 6,635 shares of the 19,903 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

SEC source: 0001104659-26-006842 · tm264158-3_4seq1.xml · derivative · entry 2

Fink Jeffrey Russell · CIK 0002029601 · VP, General Manager, BRZ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 40,054 shares

Expires not disclosed

F2 · security: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · shares: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · price: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.exercise_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.expiration_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · balance_after: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

SEC source: 0001104659-26-006842 · tm264158-3_4seq1.xml · derivative · entry 1

Fink Jeffrey Russell · CIK 0002029601 · VP, General Manager, BRZ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 22,955 shares

Expires not disclosed

F1 · security: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 7,652 shares of the 22,955 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · shares: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 7,652 shares of the 22,955 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · price: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 7,652 shares of the 22,955 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 7,652 shares of the 22,955 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 7,652 shares of the 22,955 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · balance_after: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 7,652 shares of the 22,955 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

SEC source: 0001104659-26-006843 · tm264158-4_4seq1.xml · derivative · entry 2

Marinelli Jon R · CIK 0002100537 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,022 shares

Expires not disclosed

F2 · security: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 341 shares of the 1,022 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · shares: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 341 shares of the 1,022 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · price: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 341 shares of the 1,022 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 341 shares of the 1,022 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 341 shares of the 1,022 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · balance_after: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 341 shares of the 1,022 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

SEC source: 0001104659-26-006843 · tm264158-4_4seq1.xml · derivative · entry 1

Marinelli Jon R · CIK 0002100537 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,659 shares

Expires not disclosed

F1 · security: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 553 shares of the 1,659 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · shares: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 553 shares of the 1,659 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · price: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 553 shares of the 1,659 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 553 shares of the 1,659 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 553 shares of the 1,659 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · balance_after: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 553 shares of the 1,659 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

SEC source: 0001104659-26-006840 · tm264158-2_4seq1.xml · derivative · entry 2

ISAAK RICHARD R · CIK 0001398052 · SVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 82,169 shares

Expires not disclosed

F2 · security: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · shares: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · price: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.exercise_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.expiration_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · balance_after: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

SEC source: 0001104659-26-006840 · tm264158-2_4seq1.xml · derivative · entry 1

ISAAK RICHARD R · CIK 0001398052 · SVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 73,086 shares

Expires not disclosed

F1 · security: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · shares: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · price: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · balance_after: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

SEC source: 0001104659-26-006837 · tm264158-1_4seq1.xml · derivative · entry 2

KEANE JOHN M · CIK 0001267719 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,597 shares

Expires not disclosed

F2 · security: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 1,533 shares of the 4,597 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · shares: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 1,533 shares of the 4,597 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · price: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 1,533 shares of the 4,597 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 1,533 shares of the 4,597 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 1,533 shares of the 4,597 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

F2 · balance_after: Represents shares of Common Stock underlying a time-based vesting stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest as to one-third, or 1,533 shares of the 4,597 total number of shares on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through any vesting date.

SEC source: 0001104659-26-006837 · tm264158-1_4seq1.xml · derivative · entry 1

KEANE JOHN M · CIK 0001267719 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,464 shares

Expires not disclosed

F1 · security: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 2,488 shares of the 7,464 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · shares: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 2,488 shares of the 7,464 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · price: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 2,488 shares of the 7,464 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 2,488 shares of the 7,464 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 2,488 shares of the 7,464 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · balance_after: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 2,488 shares of the 7,464 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 16, 2029, subject to the Reporting Person's continued service through each vesting date.

SEC source: 0001104659-26-008204 · tm264532-1_4seq1.xml · derivative · entry 2

Bardswich Lloyd · CIK 0001399729 · Director · Dir, EVP & Chief Mining Eng

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 92,440 shares

Expires not disclosed

F2 · security: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · shares: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · price: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.exercise_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.expiration_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · balance_after: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

SEC source: 0001104659-26-008204 · tm264532-1_4seq1.xml · derivative · entry 1

Bardswich Lloyd · CIK 0001399729 · Director · Dir, EVP & Chief Mining Eng

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 73,086 shares

Expires not disclosed

F1 · security: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · shares: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · price: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · balance_after: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 24,362 shares of the 73,086 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

SEC source: 0001104659-26-009244 · tm264855-1_4seq1.xml · derivative · entry 2

Pagen Melissa · CIK 0002025257 · President & COO, BRZ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 61,627 shares

Expires not disclosed

F2 · security: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · shares: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · price: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.exercise_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.expiration_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · balance_after: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

SEC source: 0001104659-26-009244 · tm264855-1_4seq1.xml · derivative · entry 1

Pagen Melissa · CIK 0002025257 · President & COO, BRZ

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 40,603 shares

Expires not disclosed

F1 · security: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 13,535 shares of the 40,603 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · shares: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 13,535 shares of the 40,603 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · price: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 13,535 shares of the 40,603 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 13,535 shares of the 40,603 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 13,535 shares of the 40,603 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

F1 · balance_after: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 13,535 shares of the 40,603 total number of shares of the RSU award will vest on January 15, 2027, and an additional one-third of the total number of shares will vest on January 18, 2028 and January 19, 2029, subject to the Reporting Person's continued service through each vesting date.

SEC source: 0001104659-26-036312 · tm2610152-1_4seq1.xml · derivative · entry 2

Gustavsen John C. · CIK 0001858307 · President, Antimony Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 61.627 shares

Expires not disclosed

F2 · security: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · shares: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · price: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.exercise_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.expiration_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · balance_after: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

SEC source: 0001104659-26-036312 · tm2610152-1_4seq1.xml · derivative · entry 1

Gustavsen John C. · CIK 0001858307 · President, Antimony Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 50.754 shares

Expires not disclosed

F1 · security: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 16,918 shares of the 50,754 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · shares: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 16,918 shares of the 50,754 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · price: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 16,918 shares of the 50,754 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.exercise_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 16,918 shares of the 50,754 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.expiration_date: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 16,918 shares of the 50,754 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

F1 · balance_after: Represents shares of Common Stock underlying a time-based vesting restricted stock unit ("RSU") award granted on January 15, 2026, under the Issuer's Amended & Restated 2023 Equity Incentive Plan. One-third, or 16,918 shares of the 50,754 total number of shares of the RSU award will vest on January 15, 2026, and an additional one-third of the total number of shares will vest on January 15, 2027 and January 18, 2028, subject to the Reporting Person's continued service through each vesting date.

SEC source: 0001104659-26-036636 · tm2610602-1_4seq1.xml · derivative · entry 2

EVANS GARY C · CIK 0001191410 · Director · Chairman & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 308,133 shares

Expires not disclosed

F2 · security: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · shares: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · price: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.exercise_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · derivative.expiration_date: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.

F2 · balance_after: Represents shares of Common Stock underlying a stock option award granted on January 15, 2026 under the Issuer's Amended & Restated 2023 Equity Incentive Plan. The stock option will vest upon meeting any of the performance measures specified in the grant at any time during the 10-year term of the award, subject to the Reporting Person's continued service through any vesting date.