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| April 08, 2026 | 320 Bay Street, 14th floor Toronto ON, M5H 4A6 www.computershare.com |
To: All Canadian Securities Regulatory Authorities
New York Stock Exchange
Subject: SEABRIDGE GOLD 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 Meeting |
| Record Date for Notice of Meeting : | May 04, 2026 |
| Record Date for Voting (if applicable) : | May 04, 2026 |
| Beneficial Ownership Determination Date : | May 04, 2026 |
| Meeting Date : | June 24, 2026 |
| Meeting Location (if available) : | Toronto, ON |
| Issuer sending proxy related materials directly to NOBO: | No |
| Issuer paying for delivery to OBO: | Yes |
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 | 811916105 | CA8119161054 |
| COMMON 144A RESTRICTED CLASS | 811916303 | US8119163033 |
| COMMON REG D/DTD EXP NOV 23/14 | 811916881 | US8119168818 |
Sincerely,
Computershare
Agent for SEABRIDGE GOLD INC.