Zymergen’s Board of Directors has adopted a procedure for receiving and addressing communications from all interested parties, including stockholders. You may send written communications to the entire Zymergen Board (or any committee thereof), Zymergen’s lead independent director, or all the independent directors of the Board, by addressing communications to Zymergen Inc., 5980 Horton Street, Suite 105, Emeryville, CA 94608, Attention: Corporate Secretary. Communications by email should be addressed to investors@zymergen.com and marked “Attention: Corporate Secretary” in the “Subject” field.

Communications sent to the foregoing will be distributed to the Board, or to an individual director, as the case may be, depending on the facts and circumstances outlined in the communication. Communication that is unduly hostile, threatening, illegal or otherwise unsuitable will be excluded from being distributed to the Board. In addition, we request that certain subjects that are not related to the Board’s duties and responsibilities be excluded from such communications: product inquiries, job applications, surveys, business solicitation and advertisements.