NovaBay Pharmaceuticals, Inc.

If you were a registered stockholder on the Record Date, you may vote your shares at the virtual Special Meeting, www.virtualshareholdermeeting.com/NBY2026SM, which contains voting instructions. You may also vote your shares by telephone by calling (toll free within the U.S. and Canada) 1-800-690-6903 and following the voting instructions read to you by the automated operator. Upon visiting the meeting website or calling the call-in telephone line, you will be prompted to enter your 16-digit control number provided to you on your proxy card. Your unique control number allows us to identify you as a stockholder and will enable you to securely cast votes.

Internet and telephone voting facilities for stockholders of record will be available 24 hours a day beginning at 12:01 a.m. Pacific Time on February 11, 2026. Internet and telephone voting will close promptly at 11:59 p.m. Eastern Time on March 11, 2026. After internet and telephone voting closes, you will only be able to vote by attending the Special Meeting via live webcast and voting at the Special Meeting. The Special Meeting starts at 11:00 a.m. (Pacific Time) on March 12, 2026. After voting is closed during the Special Meeting, you will no longer have the ability to vote your shares for the specific Proposals considered at the Special Meeting.

If you are a registered stockholder as of the Record Date and hold your shares in more than one fund or other affiliated investment vehicle, you will receive separate voting credentials for each such entity that is a record holder of shares of our stock. Please be sure to log on separately for each fund in order to cast all votes that you are entitled to cast at the Special Meeting.

If you receive proxy materials by mail or if you request paper copies of the proxy materials, you can vote by mail by marking, dating, signing and returning your proxy card in the postage-paid envelope. Further instructions on how to vote by mail are included on the proxy card. Only proxy cards that have been signed, dated, and timely returned will be counted towards the quorum and entitled to vote.

If you submit your proxy card and it does not specify how the shares represented thereby are to be voted, then the proxy will be voted “FOR” the approval of Proposal One through Proposal Seven described in this Proxy Statement. The proxy card also grants the proxy holder discretionary authority to vote on any other business that may properly come before the Special Meeting. We have not been notified by any stockholder of his or her intent to present a stockholder proposal at the Special Meeting.