Si-Bone, Inc.
A maker of titanium and bone implants for the sacroiliac (SI) joint, where the spine meets the pelvis. Its iFuse line of triangular, 3D-printed titanium implants is used in minimally invasive surgery to fuse that joint and ease lower-back and pelvic pain. Founded in 2008 by orthopedic surgeon Dr. Mark Reiley, who also invented kyphoplasty, the company's name simply nods to its focus: "SI" stands for sacroiliac.
Sold 600.0K
Bought 325.0K
Sold 1.00M
Bought 200.0K
Granted 1.35M · Sold 608.1K
Sold 10.0K
Bought 200.0K
Bought 200.0K
Granted 78.3K · Sold 64.0K
Granted 231.8K · Sold 61.1K
Granted 452.5K · Sold 217.8K
Granted 445.1K · Sold 218.6K
Granted 895.9K · Sold 1.26M
Granted 10.2K · Sold 128.0K
Granted 54.3K · Bought 325.0K · Sold 2.13M
Granted 87.4K · Sold 17.2K
Granted 62.4K · Sold 1.2K
Granted 3.1K
Granted 25.8K
Granted 92.6K · Sold 50.5K
Granted 54.3K · Sold 10.5K
Granted 50.3K · Sold 6.6K
Granted 37.9K
Granted 25.9K
Granted 21.6K
Granted 30.2K · Sold 21.4K
Granted 8.8K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Skyline Venture Partners V LP +1 co-filer10% owner · 6 transactions | — | 3.82Mas of Aug 2019 | — | — | 600.0K |
| Freund John Gordon +3 co-filersDirector, 10% owner, 10% owner · 5 transactions | — | 3.01Mas of Oct 2018 | — | 325.0K | — |
| Freund John Gordon +2 co-filersDirector, 10% owner, 10% owner · 1 transaction | — | 2.82Mas of Jan 2020 | — | — | 1.00M |
| Petersen TimothyDirector · 2 transactions | — | 1.70Mas of Oct 2018 | — | 200.0K | — |
| Francis LauraChief Executive Officer, Director · 210 transactions | — | 1.55M | 1.35M | — | 608.1K |
| Turner Daniel K III +4 co-filers10% owner · 6 transactions | — | 1.41Mas of Oct 2018 | — | — | — |
| Reiley Mark ADirector · 2 transactions | — | 1.07Mas of Apr 2019 | — | — | 10.0K |
| Bonita David PDirector · 3 transactions | — | 985.4Kas of Oct 2018 | — | 200.0K | — |
| Orbimed Advisors LLC +1 co-filerDirector · 3 transactions | — | 606.0Kas of Oct 2018 | — | 200.0K | — |
| Pisetsky Michael A.SVP, Ops & Adm/Chief Legal Ofr · 28 transactions | — | 281.0K | 78.3K | — | 64.0K |
| Pisetsky Michael ASVP, Ops & Adm/Chief Legal Ofr · 82 transactions | — | 264.6Kas of May 2025 | 231.8K | — | 61.1K |
| Recupero Anthony JSee Remarks · 186 transactions | — | 243.4K | 452.5K | — | 217.8K |
| Maheshwari AnshulChief Op & Financial Officer · 99 transactions | — | 223.3K | 445.1K | — | 218.6K |
| Dunn Jeffrey WDirector · 142 transactions | — | 218.8K | 895.9K | — | 1.26M |
| Yerby Scott AChief Technology Officer · 26 transactions | — | 177.6Kas of Jan 2020 | 10.2K | — | 128.0K |
| Freund John GordonDirector · 38 transactions | — | 146.0K | 54.3K | 325.0K | 2.13M |
| Davis Timothy E JRDirector · 13 transactions | — | 76.7K | 87.4K | — | 17.2K |
| Hinckley Gregory KDirector · 13 transactions | — | 75.6Kas of Jun 2025 | 62.4K | — | 1.2K |
| Hinckley Greg KDirector · 1 transaction | — | 75.6K | 3.1K | — | — |
| Valentine KeithDirector · 5 transactions | — | 57.2Kas of Jun 2023 | 25.8K | — | — |
| Reckling W CarltonCMO and VP, Medical Affairs · 27 transactions | — | 44.2Kas of Jan 2020 | 92.6K | — | 50.5K |
| Hilleman Jeryl LDirector · 11 transactions | — | 43.8K | 54.3K | — | 10.5K |
| Nishimura MikaDirector · 9 transactions | — | 43.7K | 50.3K | — | 6.6K |
| West Thomas A.Director · 3 transactions | — | 37.9K | 37.9K | — | — |
| Wolf Daniel WDirector · 2 transactions | — | 25.9Kas of Jun 2025 | 25.9K | — | — |
| Loh HelenDirector · 4 transactions | — | 21.6Kas of Jun 2023 | 21.6K | — | — |
| Licitra Karen ADirector · 5 transactions | — | 19.1Kas of Jun 2021 | 30.2K | — | 21.4K |
| Foley Mark JDirector · 1 transaction | — | 8.8Kas of Jun 2020 | 8.8K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over all recorded history: -5.16M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.