The following statement is being issued by Robbins Geller Rudman & Dowd LLP regarding the Zymergen Securities Litigation:

UNITED STATES DISTRICT COURT
NORTHERN DISTRICT OF CALIFORNIA
SAN JOSE DIVISION

SUMMARY NOTICE OF PROPOSED SETTLEMENT OF CLASS ACTION

TO: ALL PERSONS AND ENTITIES WHO PURCHASED OR OTHERWISE ACQUIRED ZYMERGEN INC. (“ZYMERGEN”) COMMON STOCK PURSUANT AND/OR TRACEABLE TO THE REGISTRATION STATEMENT AND PROSPECTUS ISSUED IN CONNECTION WITH ITS APRIL 2021 INITIAL PUBLIC OFFERING (“CLASS” OR “CLASS MEMBERS”)

THIS NOTICE WAS AUTHORIZED BY THE COURT. IT IS NOT A LAWYER SOLICITATION. PLEASE READ THIS NOTICE CAREFULLY AND IN ITS ENTIRETY.

YOU ARE HEREBY NOTIFIED that a hearing will be held on October 13, 2026, at 10:00 a.m., before the Honorable P. Casey Pitts at the United States District Court, Northern District of California, Robert F. Peckham Federal Building & United States Courthouse, 280 South 1st Street, San Jose, CA 95113, to determine whether: (1) the proposed settlement (the “Settlement”) of the above-captioned action (“Action”) as set forth in the Stipulation of Settlement (“Stipulation”) for $125,000,000 in cash should be approved by the Court as fair, reasonable, and adequate; (2) the Judgment as provided under the Stipulation should be entered dismissing the Action with prejudice; (3) to award Lead Counsel attorneys’ fees and expenses and awards to Plaintiffs pursuant to 15 U.S.C. §77z-1(a)(4) out of the Settlement Fund (as defined in the Notice of Proposed Settlement of Class Action (“Notice”), which is discussed below), and, if so, in what amounts; and (4) the Plan of Allocation should be approved by the Court as fair, reasonable, and adequate.

IF YOU ARE A MEMBER OF THE CLASS, YOUR RIGHTS WILL BE AFFECTED BY THE SETTLEMENT OF THIS ACTION, AND YOU MAY BE ENTITLED TO SHARE IN THE NET SETTLEMENT FUND.

To share in the distribution of the Net Settlement Fund, you must establish your rights by submitting a Proof of Claim and Release form (“Proof of Claim”) by mail (postmarked no later than October 11, 2026) or electronically via the website (no later than October 11, 2026). Failure to submit your Proof of Claim by October 11, 2026, will subject your claim to rejection and preclude you from receiving any of the recovery in connection with the Settlement of this Action. If you purchased or acquired Zymergen common stock pursuant and/or traceable to the Registration Statement issued in connection with Zymergen’s April 2021 initial public offering, you will be bound by the Settlement and any judgment and releases entered in the Action, including, but not limited to, the Judgment, whether or not you submit a Proof of Claim.

You may review the Notice, which more completely describes the Settlement and your rights thereunder (including your right to object to the Settlement), access the Proof of Claim, and find the Stipulation (which, among other things, contains definitions for the defined terms used in this Summary Notice) and other Settlement documents, online at www.ZymergenSecuritiesLitigation.com, or by contacting the Claims Administrator:

Zymergen Securities Litigation
Claims Administrator
c/o Verita Global
P.O. Box 301135
Los Angeles, CA 90030-1135
Telephone: 1-888-858-5903
info@ZymergenSecuritiesLitigation.com

Inquiries should NOT be directed to Settling Defendants, the Court, or the Clerk of the Court.

Inquiries, other than requests for the Notice or for a Proof of Claim, may be made to Lead Counsel:

ROBBINS GELLER RUDMAN & DOWD LLP
Ellen Gusikoff Stewart
655 West Broadway, Suite 1900
San Diego, CA 92101
Telephone: 1-800-449-4900
settlementinfo@rgrdlaw.com

No further exclusion opportunity is being provided under the Settlement. Because no Class Member validly excluded themselves previously when notice was provided, you will be bound by any judgment entered by the Court in this Litigation (including the releases provided for therein) whether or not you submit a Proof of Claim.

IF YOU ARE A CLASS MEMBER, YOU HAVE THE RIGHT TO OBJECT TO THE SETTLEMENT, THE PLAN OF ALLOCATION, AND/OR THE REQUEST BY LEAD COUNSEL FOR AN AWARD OF ATTORNEYS’ FEES NOT TO EXCEED 30% OF THE SETTLEMENT AMOUNT AND EXPENSES NOT TO EXCEED $3,000,000, PLUS INTEREST ON BOTH AMOUNTS, AND/OR THE AWARDS TO PLAINTIFFS PURSUANT TO 15 U.S.C. §77z-1(a)(4) IN CONNECTION WITH THEIR REPRESENTATION OF THE CLASS. ANY OBJECTIONS MUST BE FILED WITH THE COURT BY SEPTEMBER 22, 2026, IN THE MANNER AND FORM EXPLAINED IN THE NOTICE.

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