Subject: POET TECHNOLOGIES INC. Dear Sir/Madam: We advise of the following with respect to the upcoming Meeting of Security Holders for the subject Issuer:

Meeting Type : Annual General and Special Meeting

Record Date for Notice of Meeting : May 15, 2023

Record Date for Voting (if applicable) : May 15, 2023

Beneficial Ownership Determination Date : May 15, 2023

Meeting Date : June 30, 2023 Meeting Location (if available)

: Virtual Meeting

Issuer sending proxy related materials directly to NOBO:

Yes Issuer paying for delivery to OBO:

No Notice and Access (NAA) Requirements: NAA for Beneficial Holders Yes Beneficial Holders

Stratification Criteria: Not Applicable NAA for Registered Holders Yes Registered Holders

Stratification Criteria: Not Applicable Voting Security Details: Description CUSIP Number ISIN COMMON SHARES 73044W302 CA73044W3