Si-Bone Inc
Ownership
Ownership Structure
Who owns Si-Bone Inc (SIBN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 89.3% of the shares are freely tradable; institutional investors hold 108.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| First Light Asset Management, LLC | 18.14 | 8,127,985 | +51.8 | 06/30/2026 |
| BlackRock Inc | 8.20 | 3,676,259 | +7.2 | 06/30/2026 |
| Cadian Capital Management LP | 7.47 | 3,347,574 | +77.4 | 06/30/2026 |
| American Century Companies Inc | 5.60 | 2,510,963 | +0.1 | 06/30/2026 |
| Brown Advisory Holdings Inc | 4.63 | 2,077,134 | -2.1 | 06/30/2026 |
| Granahan Investment Management Inc.. | 4.31 | 1,931,182 | +11.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.10 | 1,838,499 | +4.2 | 06/30/2026 |
| Arnhold & S. Bleichroeder Advisers, LLC | 3.43 | 1,537,882 | +140.7 | 06/30/2026 |
| Impax Asset Management Group PLC | 3.18 | 1,425,010 | +0.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| American Century Small Cap Growth Inv | 4.18 | 1,872,819 | -1.2 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Francis Laura | Chief Executive Officer | 873,156 | 20,781,113 $ | Aug 17, 2026 | both |
| Maheshwari Anshul | Chief Op & Financial Officer | 214,497 | 5,105,029 $ | Oct 29, 2026 | direct |
| Pisetsky Michael A. | SVP, Ops & Adm/Chief Legal Ofr | 164,444 | 3,913,767 $ | Oct 29, 2026 | direct |
| Dunn Jeffrey W | Director | 16,057 | 382,157 $ | Oct 1, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 29, 2026 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 3,738 | 22.50 | 84,105 |
| Oct 29, 2026 | Pisetsky Michael A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 29,665 | 22.11 | 655,745 |
| Oct 12, 2026 | Francis Laura | Chief Executive Officer | Sell | 38,006 | 20.05 | 762,013 |
| Oct 5, 2026 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 1,731 | 19.50 | 33,755 |
| Oct 2, 2026 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 1,758 | 18.19 | 31,984 |
| Oct 2, 2026 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 1,560 | 18.17 | 28,341 |
| Oct 2, 2026 | Pisetsky Michael A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 34 | 18.14 | 617 |
| Oct 2, 2026 | Pisetsky Michael A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 1,799 | 18.14 | 32,637 |
| Oct 2, 2026 | Pisetsky Michael A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 1,300 | 18.20 | 23,664 |
| Oct 1, 2026 | Dunn Jeffrey W | Director | Sell | 20,000 | 18.47 | 369,400 |
| Oct 1, 2026 | Dunn Jeffrey W | Director | Other | 20,000 | 4.68 | 93,600 |
| Sep 1, 2026 | Dunn Jeffrey W | Director | Sell | 1,367 | 18.91 | 25,847 |
| Sep 1, 2026 | Dunn Jeffrey W | Director | Sell | 18,633 | 18.91 | 352,313 |
| Sep 1, 2026 | Dunn Jeffrey W | Director | Other | 1,367 | 4.68 | 6,398 |
| Sep 1, 2026 | Dunn Jeffrey W | Director | Other | 18,633 | 4.68 | 87,202 |
| Aug 24, 2026 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 11,636 | 20.11 | 233,971 |
| Aug 24, 2026 | Francis Laura | Chief Executive Officer | Sell | 25,972 | 20.12 | 522,596 |
| Aug 21, 2026 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 11,228 | 20.02 | 224,785 |
| Aug 21, 2026 | Francis Laura | Chief Executive Officer | Sell | 3,923 | 20.02 | 78,538 |
| Aug 20, 2026 | Francis Laura | Chief Executive Officer | Sell | 51,884 | 19.46 | 1,009,663 |
| Aug 19, 2026 | Maheshwari Anshul | Chief Op & Financial Officer | Sell | 5,747 | 19.55 | 112,354 |
| Aug 17, 2026 | Maheshwari Anshul | Chief Financial Officer | Sell | 2,189 | 18.62 | 40,764 |
| Aug 17, 2026 | Maheshwari Anshul | Chief Financial Officer | Sell | 2,476 | 18.68 | 46,251 |
| Aug 17, 2026 | Pisetsky Michael A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 1,871 | 18.65 | 34,898 |
| Aug 17, 2026 | Pisetsky Michael A. | SVP, Ops & Adm/Chief Legal Ofr | Sell | 1,854 | 18.62 | 34,513 |
| Aug 17, 2026 | Francis Laura | Chief Executive Officer | Sell | 1,973 | 18.63 | 36,755 |
| Aug 17, 2026 | Francis Laura | Chief Executive Officer | Sell | 2,236 | 18.68 | 41,772 |
| Aug 17, 2026 | Francis Laura | Chief Executive Officer | Sell | 3,203 | 18.66 | 59,778 |
| Aug 17, 2026 | Francis Laura | Chief Executive Officer | Sell | 3,652 | 18.66 | 68,144 |
| Aug 17, 2026 | Francis Laura | Chief Executive Officer | Sell | 3,892 | 18.66 | 72,616 |
| Aug 3, 2026 | Dunn Jeffrey W | Director | Sell | 20,000 | 18.46 | 369,214 |
| Aug 3, 2026 | Dunn Jeffrey W | Director | Other | 20,000 | 4.68 | 93,600 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 3, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.