SI-BONE, Inc.
SIBN- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001459839
In the last 90 days, SI-BONE, Inc. insiders filed 0 open-market purchases and 11 sales; 167 institutions reported holding it in 13F filings for Q2 2026, worth $773.9M in total; no superinvestor holds it.
Holders of 5% or more of SIBN
Holders whose latest Schedule 13D or 13G filing reports 5% or more of SI-BONE, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| First Light Asset Management, LLC | 13G/A | 18.36%8.12M shares | +6.44 ppfrom 11.92% | Dec 5, 20252 filings | May 7, 2026 | SEC |
| BlackRock, Inc. | 13G/A | 6.90%3.06M shares | −1.20 ppfrom 8.10% | Apr 17, 20252 filings | Apr 24, 2026 | SEC |
| Brown Advisory Inc | 13G/A | 5.79%2.51M shares | −1.81 ppfrom 7.60% | Apr 18, 20252 filings | Feb 13, 2026 | SEC |
| American Century Investment Management Inc | 13G/A | 5.30%2.30M shares | −1.30 ppfrom 6.60% | May 15, 20253 filings | Feb 13, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
16 Schedule 13D and 13G filings on SI-BONE, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| May 7, 20264:30 PM ET | First Light Asset Management, LLCand 1 other | 13G/A | 18.36%8.12M shares | +6.44 ppfrom 11.92% | Apr 30, 2026 | SEC |
| Apr 24, 20264:11 PM ET | BlackRock, Inc. | 13G/A | 6.90%3.06M shares | −1.20 ppfrom 8.10% | Mar 31, 2026 | SEC |
| Mar 27, 20261:03 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 17, 20266:30 PM ET | OrbiMed Capital LLCand 1 other | 13G/A | 0.00%0 shares | −5.10 ppfrom 5.10%Below 5% | Dec 31, 2025 | SEC |
| Feb 13, 20269:51 AM ET | American Century Investment Management Incand 3 others | 13G/A | 5.30%2.30M shares | −1.30 ppfrom 6.60% | Dec 31, 2025 | SEC |
| Feb 13, 20269:26 AM ET | Brown Advisory Incand 4 others | 13G/A | 5.79%2.51M shares | −1.81 ppfrom 7.60% | Dec 31, 2025 | SEC |
| Feb 12, 202612:20 PM ET | Champlain Investment Partners, LLC | 13G | 4.90%2.11M shares | −0.10 ppfrom 5.00%Below 5% | Sep 30, 2025 | SEC |
| Dec 5, 20254:32 PM ET | First Light Asset Management, LLCand 1 other | 13G | 11.92%5.17M shares | New | Nov 30, 2025 | SEC |
| Nov 14, 20259:43 AM ET | American Century Investment Management Incand 3 others | 13G/A | 6.60%2.84M shares | +0.40 ppfrom 6.20% | Sep 30, 2025 | SEC |
| Aug 14, 20256:05 PM ET | OrbiMed Capital LLCand 1 other | 13G/A | 5.10%2.18M shares | −1.90 ppfrom 7.00% | Jun 30, 2025 | SEC |
| Aug 12, 20254:05 PM ET | Champlain Investment Partners, LLC | 13G | 5.00%2.14M shares | −1.70 ppfrom 6.70% | Jun 30, 2025 | SEC |
| May 15, 20258:10 PM ET | OrbiMed Capital LLCand 1 other | 13G/A | 7.00%2.97M shares | – | Mar 31, 2025 | SEC |
| May 15, 202510:56 AM ET | American Century Investment Management Incand 2 others | 13G/A | 6.20%2.64M shares | – | Mar 31, 2025 | SEC |
| Apr 18, 20255:24 PM ET | Brown Advisory Incand 3 others | 13G/A | 7.60%3.22M shares | – | Mar 31, 2025 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 8.10%3.42M shares | – | Mar 31, 2025 | SEC |
| Nov 12, 202410:53 AM ET | Champlain Investment Partners, LLC | 13G | 6.70%2.80M shares | New | Sep 30, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell SI-BONE, Inc. shares.
No Form 144 notices for SI-BONE, Inc. are on file.