GigCapital7 Corp. (GIG): auditor change — Hadron Energy closes SPAC merger with GigCapital7; 84% of public shares redeemed

BPM LLP (“ BPM ”), which prior to the Closing, was the independent registered public accounting firm of GigCapital7 Corp., and therefore has been and remains the independent registered public accounting firm of the legal acquiror Company, was engaged by the Board of Directors of Hadron Energy Operating Company and its audit committee to replace WithumSmith+Brown, PC (“Withum”) on April 24, 2026 with an intent for BPM to serve as the independent registered public accounting firm of the accounting acquiror upon the Closing.

and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026

Effective upon the Closing on May 22, 2026, Dr. Avi Katz and Christine M. Marshall resigned as executive officers of GigCapital7, and each of Karen Rogge and Professor Darius Moshfeghi resigned as directors of GigCapital7.

with Samuel Gibson, Rahul Shukla, Ken Canavan, Ross T. Ridenoure, and Dr. Andrew M. Ward having been named as executive officers effective upon the Closing on May 22, 2026

with Samuel Gibson, Rahul Shukla, Ken Canavan, Ross T. Ridenoure, and Dr. Andrew M. Ward having been named as executive officers effective upon the Closing on May 22, 2026

and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026

and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026

and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026

and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026

and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026

and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026

with Samuel Gibson, Rahul Shukla, Ken Canavan, Ross T. Ridenoure, and Dr. Andrew M. Ward having been named as executive officers effective upon the Closing on May 22, 2026

and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026

Effective upon the Closing on May 22, 2026, Dr. Avi Katz and Christine M. Marshall resigned as executive officers of GigCapital7, and each of Karen Rogge and Professor Darius Moshfeghi resigned as directors of GigCapital7.

and each of the directors having been elected by the GigCapital7 stockholders to the board also upon the Closing on May 22, 2026

with Samuel Gibson, Rahul Shukla, Ken Canavan, Ross T. Ridenoure, and Dr. Andrew M. Ward having been named as executive officers effective upon the Closing on May 22, 2026

Effective upon the Closing on May 22, 2026, Dr. Avi Katz and Christine M. Marshall resigned as executive officers of GigCapital7, and each of Karen Rogge and Professor Darius Moshfeghi resigned as directors of GigCapital7.

Effective upon the Closing on May 22, 2026, Dr. Avi Katz and Christine M. Marshall resigned as executive officers of GigCapital7, and each of Karen Rogge and Professor Darius Moshfeghi resigned as directors of GigCapital7.

with Samuel Gibson, Rahul Shukla, Ken Canavan, Ross T. Ridenoure, and Dr. Andrew M. Ward having been named as executive officers effective upon the Closing on May 22, 2026

As a result of the Business Combination, the Company ceased being a shell company.

In connection with the Closing of the Business Combination, GigCapital7’s bylaws were amended and restated (the “ Amended and Restated Bylaws ”). The Amended and Restated Bylaws, among other things, (i) establish advance notice procedures for stockholder proposals and director nominations to be brought before meetings of stockholders, (ii) restrict the transfer of shares of Combined Company Common Stock issued as consideration pursuant to the Merger, and shares issued to directors, officers and employees upon the settlement or exercise of equity awards, subject to certain customary transfer exceptions, from the Closing until the earliest of (a) six months following the Closing Date, (b) subsequent to Closing, the date on which the closing price of Combined Company Common Stock equals or exceeds $11.50 per share for any 20 Trading Days within any 30 consecutive Trading Day period commencing at least 90 days after the Closing Date, or (c) subsequent to the Closing, the date on which the

Immediately prior to the Closing of the Business Combination, GigCapital7’s amended and restated certificate of incorporation (the “ Charter ”), was further amended and restated in its entirety (as so amended and restated, the “ Amended and Restated Certificate of Incorporation ”) to, among other things: (a) change the post-combination company’s name to Hadron Energy, Inc.; (b) classify and divide the Board into three classes, each with terms expiring at different times; (c) delete all provisions relating to Domesticated GigCapital7 as a special purpose acquisition company, the Business Combination and the redemption rights of the Public Shares in connection with the Closing of the Business Combination (including the prior provisions of Article IV, Section 4.8 (Business Combination) and references thereto); (d) increase the authorized share capital of the Company to 625,000,000 total shares, consisting of (i) 615,000,000 shares of common stock, par value $0.0001 per share, and (ii) 10,

As previously announced on the Current Report on Form 8-K filed with the Securities and Exchange Commission (the “ SEC ”) on May 28, 2026 (the “ May 28 Current Report ”), Hadron Energy, Inc. (f/k/a GigCapital7 Corp. (“ GigCapital7 ”)) (the “ Company ” or “ Combined Company ” or “ Hadron Energy ”) consummated its business combination (the “ Business Combination ”) with Hadron Energy Operating Company Inc. (f/k/a Hadron Energy, Inc.) (“ Hadron Energy Operating Company ”) on May 22, 2026, pursuant to that certain Business Combination Agreement, dated as of September 27, 2025, as amended by that certain First Amendment to Business Combination Agreement, dated as of December 12, 2025, and by that certain Second Amendment to Business Combination Agreement, dated as of April 16, 2026 (the “Second Amendment”), by and among GigCapital7, MMR Merger Sub, Inc. and Hadron Energy Operating Company (the “ Business Combination Agreement ”).