FRMI · Fermi Inc.

The sales reported herein were pursuant to the exercise of options granted by certain founders of the Issuer in connection with the Series C fundraising round of the Issuer prior to the initial public offering.

Represents a weighted average price calculated by a broker executing automatic "sell-to-cover" transactions to cover withholding taxes upon award vesting and share delivery. These shares were sold as part of a block trade in multiple transactions at prices ranging from $6.50 to $6.20, inclusive, and the Reporting Person undertakes to provide to the Fermi Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price.

Includes 500,000 shares of restricted common stock of the Issuer subject to time-based vesting conditions.

Represents a weighted average price calculated by a broker executing automatic "sell-to-cover" transactions to cover withholding taxes upon award vesting and share delivery. These shares were sold as part of a block trade in multiple transactions at prices ranging from $6.50 to $6.20, inclusive, and the Reporting Person undertakes to provide to the Fermi Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price.

Includes 500,000 shares of restricted common stock of the Issuer subject to time-based vesting conditions.

Represents an award of restricted stock units ("RSUs") of the Issuer granted to Mr. Perry under the Issuer's 2025 Long-Term Incentive Plan that will generally vest as follows: (i) 69,638 RSUs on September 30, 2026, (ii) 35,818 RSUs on May 29, 2027, and (iii) 69,638 RSUs on September 30, 2027, in each case subject to Mr. Perry's continued service relationship with the Issuer through such date.

Represents an award of restricted stock units ("RSUs") of the Issuer granted to Mr. Haas under the Issuer's 2025 Long-Term Incentive Plan that will generally vest as follows: (i) 69,638 RSUs on September 30, 2026, (ii) 35,818 RSUs on May 29, 2027, and (iii) 69,638 RSUs on September 30, 2027, in each case subject to Mr. Haas's continued service relationship with the Issuer through such date.

Represents an award of restricted stock of the Issuer granted to Mr. Stein under the Issuer's 2025 Long-Term Incentive Plan that will generally vest on April 19, 2027, subject to Mr. Stein's continued service relationship with the Issuer through such date.

Represents an award of restricted stock units of the Issuer granted to Mr. Everson under the Issuer's 2025 Long-Term Incentive Plan that will generally vest on May 29, 2027, subject to Mr. Everson's continued service relationship with the Issuer through such date.

Represents restricted stock units ("RSUs") of the Issuer granted to Mr. McIntire under the Issuer's 2025 Long-Term Incentive Plan that will generally vest as follows: (i) 69,638 RSUs on September 30, 2026, (ii) 35,818 RSUs on May 29, 2027, and (iii) 69,638 RSUs on September 30, 2027, in each case subject to Mr. McIntire's continued service relationship with the Issuer through such date.

This Form 4 reflects a correction to the number of shares of common stock reported as directly beneficially owned by the reporting person on the Form 3 filed on September 30, 2025. Due to an administrative error, the Form 3 reported direct beneficial ownership of 148,122 shares of common stock; the correct number of shares of common stock directly beneficially owned as of that date was 141,069. No transactions occurred between the Form 3 filing date and the date of this Form 4.

Represents an award of restricted stock units ("RSUs") of the Issuer granted to Mr. Robbin-Coker under the Issuer's 2025 Long-Term Incentive Plan that will generally vest as follows: (i) 69,638 RSUs on September 30, 2026, (ii) 35,818 RSUs on May 29, 2027, and (iii) 69,638 RSUs on September 30, 2027, in each case subject to Mr. Robbin-Coker's continued service relationship with the Issuer through such date.

Represents an award of restricted stock units of the Issuer granted to Mr. Kellerman under the Issuer's 2025 Long-Term Incentive Plan that will generally vest on May 29, 2027, subject to Mr. Kellerman's continued service relationship with the Issuer through such date.

This Form 4 reflects a correction to the number of shares of common stock reported as directly beneficially owned by the reporting person on the Form 3 filed on September 30, 2025. Due to an administrative error, the Form 3 reported direct beneficial ownership of 11,700,000 shares of common stock; the correct number of shares of common stock directly beneficially owned as of that date was zero. No transactions occurred between the Form 3 filing date and the date of this Form 4.

Represents a weighted average price calculated by a broker executing automatic "sell-to-cover" transactions to cover withholding taxes upon award vesting and share delivery. These shares were sold as part of a block trade in multiple transactions at prices ranging from $4.76 to $4.47, inclusive, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price.

Includes 4,200,000 shares of restricted common stock of the Issuer subject to time-based vesting conditions.

Represents a weighted average price calculated by a broker executing automatic "sell-to-cover" transactions to cover withholding taxes upon award vesting and share delivery. These shares were sold as part of a block trade in multiple transactions at prices ranging from $4.76 to $4.47, inclusive, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price.

Includes 4,200,000 shares of restricted common stock of the Issuer subject to time-based vesting conditions.

Represents a weighted average price calculated by a broker executing automatic "sell-to-cover" transactions to cover withholding taxes upon award vesting and share delivery. These shares were sold as part of a block trade in multiple transactions at prices ranging from $4.76 to $4.47, inclusive, and the Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price.

Includes 8,700,000 shares of restricted common stock of the Issuer subject to time-based vesting conditions.

Represents a weighted average price calculated by a broker executing automatic "sell-to-cover" transactions to cover withholding taxes upon award vesting and share delivery. These shares were sold as part of a block trade in multiple transactions at prices ranging from $5.16 to $4.77, inclusive, and the Reporting Person undertakes to provide to Fermi Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price.

Represents a weighted average price calculated by a broker executing automatic "sell-to-cover" transactions to cover withholding taxes upon award vesting and share delivery. These shares were sold as part of a block trade in multiple transactions at prices ranging from $5.16 to $4.77, inclusive, and the Reporting Person undertakes to provide to Fermi Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price.

Represents a weighted average price calculated by a broker executing automatic "sell-to-cover" transactions to cover withholding taxes upon award vesting and share delivery. These shares were sold as part of a block trade in multiple transactions at prices ranging from $5.16 to $4.77, inclusive, and the Reporting Person undertakes to provide to Fermi Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate sales price.

The reported price is the weighted average sales price for the transactions reported on that line. Sales were made at prices between $5.4003-$5.5494 per share. The Reporting Person will provide to the Staff, the Issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

Reflects shares of common stock of Fermi Inc. (the "Issuer") directly held by Caddis Holdings, LP. Mr. Perry is a manager of Caddis Capital, LLC, the general partner of Caddis Holdings, LP, and may be deemed to beneficially own common stock of the Issuer held by Caddis Holdings, LP. Mr. Perry disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. This report shall not be deemed an admission that Mr. Perry is the beneficial owner of such securities for purposes of Sections 13 or 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose. The Reporting Persons declare that neither the filing of this statement nor anything herein shall be construed as an admission that such persons are, for the purposes of Section 13(d) or 13(g) of the Exchange Act or any other purpose, a member of a group with respect to the Issuer or securities of the Issuer.

Caddis Holdings, LP was previously organized as Caddis Holdings, LLC and underwent a change in the form of the entity, without the transfer of any shares of the Issuer or any change in the beneficial ownership of such shares.

The reported price is the weighted average sales price for the transactions reported on that line. Sales were made at prices between $4.9286-$5.346 per share. The Reporting Persons will provide to the Staff, the Issuer, or a security holder full information regarding the number of shares purchased or sold at each separate price upon request.

Reflects shares of common stock of Fermi Inc. (the "Issuer") directly held by Caddis Holdings, LP. Mr. Perry is a manager of Caddis Capital, LLC, the general partner of Caddis Holdings, LP, and may be deemed to beneficially own common stock of the Issuer held by Caddis Holdings, LP. Mr. Perry disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. This report shall not be deemed an admission that Mr. Perry is the beneficial owner of such securities for purposes of Sections 13 or 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or for any other purpose. The Reporting Persons declare that neither the filing of this statement nor anything herein shall be construed as an admission that such persons are, for the purposes of Section 13(d) or 13(g) of the Exchange Act or any other purpose, a member of a group with respect to the Issuer or securities of the Issuer.

Caddis Holdings, LP was previously organized as Caddis Holdings, LLC and underwent a change in the form of the entity, without the transfer of any shares of the Issuer or any change in the beneficial ownership of such shares.