BLFS · Insider trading · 13F holders · Congress trades
Biolife Solutions Inc (BLFS)
Who is buying and selling BLFS: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 15
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 2
BLFS at a glance
- No open-market insider purchases or sales of BLFS were filed in the last 90 days.
- 15 13F filers hold BLFS among their 50 largest positions, worth $227.6M combined. The biggest bets by portfolio weight are Casdin Capital, LLC (6.6%), Heights Point Management, LP (5.4%) and Gagnon Advisors, LLC (4.9%). In their latest 13Fs, 6 managers opened a new position and 0 added to one.
- Members of Congress have disclosed 4 BLFS trades since 2020, 1 purchase and 1 sale in the past year; the latest was Chris Jacobs (R-NY), selling $1K–15K on Dec 12, 2022.
- BLFS last closed at $38.61 on Oct 7, 2026.
BLFS insider trading
No open-market insider purchases or sales of BLFS were filed in the last 90 days.
Who owns BLFS? Hedge funds and superinvestors
15 13F filers hold BLFS among their 50 largest positions, worth $227.6M combined. The biggest bets by portfolio weight are Casdin Capital, LLC (6.6%), Heights Point Management, LP (5.4%) and Gagnon Advisors, LLC (4.9%). In their latest 13Fs, 6 managers opened a new position and 0 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Casdin Capital, LLCHedge fund | 6.6% | $131.5M | 4,655,000 | -21.9% shares | Q2 2026 |
| Cramer Rosenthal Mcglynn LLCAsset manager | 0.8% | $16.3M | 575,792 | -9.0% shares | Q2 2026 |
| Next Century Growth Investors LLCInstitutional asset manager | 0.8% | $15.8M | 558,829 | — | Q2 2026 |
| Gagnon Securities LLCWealth manager | 2.9% | $15.1M | 535,906 | -0.1% shares | Q2 2026 |
| Roubaix Capital, LLCHedge fund | 3.1% | $8.7M | 309,618 | New | Q2 2026 |
| Gagnon Advisors, LLCHedge fund | 4.9% | $7.7M | 274,217 | +0.0% shares | Q2 2026 |
| Abc Arbitrage SAInvestment manager | 0.7% | $7.3M | 189,120 | — | Q3 2026 |
| Heights Point Management, LPHedge fund | 5.4% | $6.7M | 238,850 | +2.5% shares | Q2 2026 |
| Transmarket Holdings LPHedge fund | 3.0% | $5.4M | 138,110 | New | Q3 2026 |
| Summit Creek Advisors LLCInstitutional asset manager | 1.7% | $5.1M | 180,544 | -41.6% shares | Q2 2026 |
| Trium Capital LLPHedge fund | 3.8% | $3.0M | 76,232 | New | Q3 2026 |
| Versor Investments LPHedge fund | 4.0% | $2.4M | 61,098 | New | Q3 2026 |
| Penbrook Management LLCWealth manager | 0.8% | $1.4M | 36,895 | -7.1% shares | Q3 2026 |
| Harvest Management LLCInvestment manager | 0.4% | $904K | 32,000 | New | Q2 2026 |
| Chicago Capital Management, LLCHedge fund | 0.8% | $223K | 7,524 | New | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 6, Q2 2026: 9). Screen BLFS in the grand portfolio →
BLFS stock trades by members of Congress
Members of Congress have disclosed 4 BLFS trades since 2020, 1 purchase and 1 sale in the past year; the latest was Chris Jacobs (R-NY), selling $1K–15K on Dec 12, 2022.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Jan 20, 2023 | Chris JacobsR-NY · House | Sale | $1K–15K | Dec 12, 2022 | — |
| Dec 12, 2022 | Chris JacobsR-NY · House | Buy | $1K–15K | Nov 8, 2022 | — |
| Mar 5, 2021 | Tom MalinowskiD-NJ · House | Buy | $1K–15K | Jul 7, 2020 | — |
| Mar 5, 2021 | Tom MalinowskiD-NJ · House | Buy | $15K–50K | Jun 17, 2020 | — |
2 members have traded BLFS: Chris Jacobs, Tom Malinowski.
BLFS questions and answers
Are insiders buying BLFS stock?
No open-market insider purchases or sales of BLFS were filed in the last 90 days.
Which hedge funds own BLFS?
15 13F filers hold BLFS among their 50 largest positions, worth $227.6M combined. The biggest bets by portfolio weight are Casdin Capital, LLC (6.6%), Heights Point Management, LP (5.4%) and Gagnon Advisors, LLC (4.9%). In their latest 13Fs, 6 managers opened a new position and 0 added to one.
Has Congress traded BLFS?
Members of Congress have disclosed 4 BLFS trades since 2020, 1 purchase and 1 sale in the past year; the latest was Chris Jacobs (R-NY), selling $1K–15K on Dec 12, 2022.
Who is the largest holder of BLFS?
Among 13F filers, Casdin Capital, LLC reports the largest BLFS position, $131.5M (4,655,000 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Casdin Capital, LLC's: 6.6% of its portfolio.
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