Exhibit 3.1

MANDIANT, INC. 

AMENDMENT 

TO

AMENDED AND RESTATED BYLAWS 

On March 7, 2022, the Board of Directors of Mandiant, Inc., a Delaware corporation (the “Corporation”), in accordance with the Delaware General Corporation Law and the Amended and Restated Bylaws of the Corporation (the “Bylaws”), approved and adopted the following amendment to the Bylaws to be effective immediately. 

The Bylaws are hereby amended by adding the following as new Article XI after existing Article X:

Unless the Corporation consents in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware (or, if the Court of Chancery does not have jurisdiction, another State court in Delaware or the federal district court for the District of Delaware) shall, to the fullest extent permitted by law, be the sole and exclusive forum for (a) any derivative action or proceeding brought on behalf of the Corporation, (b) any action asserting a claim of breach of a fiduciary duty owed by any director, stockholder, officer or other employee of the Corporation to the Corporation or the Corporation’s stockholders, (c) any action arising pursuant to any provision of the DGCL or the Certificate of Incorporation or these Bylaws (as either may be amended from time to time) or (d) any action asserting a claim governed by the internal affairs doctrine, except for, as to each of (a) through (d) above, any claim as to which such court determines that there is an indispensable party not subject to the jurisdiction of such court (and the indispensable party does not consent to the personal jurisdiction of such court within 10 days following such determination), which is vested in the exclusive jurisdiction of a court or forum other than such court, or for which such court does not have subject matter jurisdiction.

Unless the Corporation consents in writing to the selection of an alternative forum, the federal district courts of the United States of America shall be the sole and exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act of 1933, as amended, or the 1934 Act, including any claim arising under Section 14(a) of the 1934 Act.

Any person or entity purchasing or otherwise acquiring any interest in any security of the Corporation shall be deemed to have notice of and consented to the provisions of this Article XI. This provision shall be enforceable by any party to a complaint covered by the provisions of this Article XI. For the avoidance of doubt, nothing contained in this Article XI shall apply to any action brought to enforce a duty or liability created by the 1934 Act or any successor thereto.