Biolife Solutions Inc
BLFS- Exchange
- Nasdaq
- Industry
- Electromedical & Electrotherapeutic Apparatus
- SEC CIK
- 0000834365
No open-market purchases or sales by Biolife Solutions Inc insiders were filed in the last 90 days; 216 institutions reported holding it in 13F filings for Q2 2026, worth $1.40B in total; no superinvestor holds it.
Holders of 5% or more of BLFS
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Biolife Solutions Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Casdin Capital, LLC | 13D/A | 12.40%5.96M shares | −1.60 ppfrom 14.00% | Apr 9, 20255 filings | Oct 17, 2025 | SEC |
| T. Rowe Price Investment Management, Inc. | 13G | 8.90%4.25M shares | New | Aug 14, 20251 filing | Aug 14, 2025 | SEC |
| Glazer Capital, LLC | 13G | 5.49%2.69M shares | New | Sep 24, 20261 filing | Sep 24, 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
8 Schedule 13D and 13G filings on Biolife Solutions Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Sep 24, 20262:44 PM ET | Glazer Capital, LLCand 1 other | 13G | 5.49%2.69M shares | New | Sep 17, 2026 | SEC |
| Mar 26, 20264:11 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 12, 20262:48 PM ET | Invesco Ltd. | 13G/A | 8.20%3.93M shares | – | Dec 31, 2025 | SEC |
| Jan 8, 202612:15 PM ET | T. Rowe Price Investment Management, Inc. | 13G/A | 10.80%5.18M shares | +1.90 ppfrom 8.90% | Dec 31, 2025 | SEC |
| Oct 17, 20258:04 PM ET | Casdin Capital, LLCand 3 others | 13D/A | 12.40%5.96M shares | −1.60 ppfrom 14.00% | Oct 15, 2025 | SEC |
| Aug 21, 20259:35 PM ET | Casdin Capital, LLCand 3 others | 13D/A | 14.00%6.71M shares | −1.00 ppfrom 15.00% | Aug 15, 2025 | SEC |
| Aug 14, 202512:12 PM ET | T. Rowe Price Investment Management, Inc. | 13G | 8.90%4.25M shares | New | Jun 30, 2025 | SEC |
| Aug 13, 20257:00 PM ET | Casdin Capital, LLCand 3 others | 13D/A | 15.00%7.21M shares | −1.20 ppfrom 16.20% | Aug 11, 2025 | SEC |
| Jun 12, 20259:10 PM ET | Casdin Capital, LLCand 3 others | 13D/A | 16.20%7.71M shares | −2.30 ppfrom 18.50% | Jun 10, 2025 | SEC |
| Apr 9, 20255:13 PM ET | Casdin Capital, LLCand 3 others | 13D/A | 18.50%8.74M shares | – | Apr 7, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Biolife Solutions Inc shares.
No Form 144 notices for Biolife Solutions Inc are on file.