SI-BONE, Inc. (SIBN) ownership: Top institutional holder: First Light Asset Management, LLC ($67.61M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| First Light Asset Management, LLC | 5353190.00 | $67.61M | 2026-03-31 |
| VANGUARD GROUP INC | 2501555.00 | $49.33M | 2025-12-31 |
| BlackRock, Inc. | 3428541.00 | $43.30M | 2026-03-31 |
| AMERICAN CENTURY COMPANIES INC | 2509065.00 | $31.69M | 2026-03-31 |
| BROWN ADVISORY INC | 2122332.00 | $26.81M | 2026-03-31 |
| CADIAN CAPITAL MANAGEMENT, LP | 1887472.00 | $23.84M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1764313.00 | $22.28M | 2026-03-31 |
| Granahan Investment Management, LLC | 1739097.00 | $21.96M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 |
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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.