Simpson Manufacturing Co., Inc. (SSD) ownership: Top institutional holder: BlackRock, Inc. ($691.93M). Insider activity: Net Seller (6 buys, 12 sells). 3 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 4031756.00 | $691.93M | 2026-03-31 |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 3885449.00 | $666.82M | 2026-03-31 |
| VANGUARD GROUP INC | 4036612.00 | $651.79M | 2025-12-31 |
| FMR LLC | 2646302.00 | $454.16M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1927556.00 | $330.81M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1864047.00 | $319.91M | 2026-03-31 |
| ValueAct Holdings, L.P. | 1398042.00 | $239.93M | 2026-03-31 |
| MORGAN STANLEY | 1297261.00 | $222.64M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-05-06 | |
| Sell | null | 2026-02-17 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.