| NEW YORK | 000-10592 | 14-1630287 |
| (State or Other Jurisdiction of Incorporation) | (Commission File No.) | (IRS Employer Identification No.) |
| 5 SARNOWSKI DRIVE, GLENVILLE, NEW YORK | 12302 | |
| (Address of Principal Executive Offices) | (Zip Code) |
| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered | |||
| Common Stock, $1.00 par value | TRST | Nasdaq Global Select Market |
| | Emerging growth company ☐ |
| Item 8.01. | Other Events |
| Item 9.01. | Financial Statements and Exhibits |
| (c) | Exhibits |
| Reg S-K Exhibit No. | Description |
| Press release dated August 18, 2026 announcing that the Board of Directors of TrustCo declared a quarterly cash dividend of $0.40 per share. | ||
| 104 | Cover Page Interactive Data File – the cover page XBRL tags are embedded within the Inline XBRL document. |
| Dated: August 18, 2026 | |||
| TRUSTCO BANK CORP NY | |||
| (Registrant) | |||
| By: | /s/ Michael M. Ozimek | ||
| Michael M. Ozimek | |||
| Executive Vice President and | |||
| Chief Financial Officer | |||