IMMUCELL CORP /DE/

For Immediate Release

PORTLAND, Maine –November 4, 2025–ImmuCell Corporation (Nasdaq: ICCC)(“ImmuCell” or the “Company”), a growing animal health company that develops, manufactures and markets scientifically proven and practical products that improve the health and productivity of dairy and beef cattle, today announced the start date of its new CEO and related board changes.

Effective November 1, 2025, Olivier te Boekhorst began serving as President and CEO of the Company, succeeding Michael F. Brigham. At its meeting on October 29, 2025, the Company’s Board of Directors appointed Mr. te Boekhorst to the Board of Directors along with Timothy C. Fiori, CFO. Mr. Fiori joined ImmuCell as CFO in April of 2025 and brings 24 years of finance and commercial operating experience in the livestock industry to the Company. Mr. Fiori will also serve as Treasurer and Secretary of the Company. Mr. Brigham will continue as a member of the Board and serve as a Special Advisor to the CEO until January of 2026.

“I appreciate the confidence that the Board of Directors has demonstrated in me to lead the Company forward at this pivotal period in its development,” commented Mr. te Boekhorst, President and CEO of ImmuCell. “I am impressed with the team at ImmuCell and look forward to working with Tim, Michael and the rest of the organization to create value as we grow the** First Defense**® franchise and complete the development ofRe-Tain®.”

Conference Call to Discuss Third Quarter Financial Results:

The Company is planning to host a conference call on Friday, November 14, 2025, at 9:00 AM ET to discuss the unaudited financial results for the quarter ended September 30, 2025. Interested parties can access the conference call by dialing (844) 855-9502 (toll free) or (412) 317-5499 (international) at 9:00 AM ET. A teleconference replay of the call will be available until November 21, 2025, at (877) 344-7529 (toll free) or (412) 317-0088 (international), utilizing replay access code #7664668. Investors are encouraged to review the Company’s Corporate Presentation slide deck that provides an overview of the Company’s business and is available under the “Investors” tab of the Company’s website at www.immucell.com, or by request to the Company. An updated version of the slide deck is expected to be made available after the market closes on Thursday, November 13, 2025.

About ImmuCell:

ImmuCell Corporation's (Nasdaq: ICCC) purpose is to create scientifically proven and practical products that improve the health and productivity of dairy and beef cattle. ImmuCell manufactures and marketsFirst Defense®, providingImmediate Immunity™ to newborn dairy and beef calves, and is in the late stages of developingRe-Tain®, a novel treatment for subclinical mastitis in dairy cows without FDA-required milk discard or pre-slaughter withdrawal label restrictions that provides an alternative to traditional antibiotics. Press releases and other information about the Company are available at: http://www.immucell.com.