GAMCO Investors, Inc. 13D and 13G filings for Surmodics, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2025-11-20 4:06 pm Sale | 2025-11-19 | 13D | SURMODICS INC SRDX | GAMCO INVESTORS, INC. ET AL GBL | 0 0.000% | -392,575![]() (Position Closed) | Filing |
| 2025-03-19 4:00 pm Purchase | 2025-03-12 | 13D | SURMODICS INC SRDX | GAMCO INVESTORS, INC. ET AL GBL | 392,575 2.800% | 392,575![]() (New Position) | Filing |

