GOSS · Insider trading · 13F holders · Congress trades
Gossamer Bio Inc (GOSS)
Who is buying and selling GOSS: 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
- 16
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
GOSS at a glance
- No open-market insider purchases or sales of GOSS were filed in the last 90 days.
- 16 13F filers hold GOSS among their 50 largest positions, worth $28.5M combined. The biggest bets by portfolio weight are Worth Venture Partners, LLC (20.5%), DeepCurrents Investment Group LLC (7.7%) and Kalehua Capital Management LLC (1.3%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
- No member of Congress has disclosed a trade in GOSS.
GOSS insider trading
No open-market insider purchases or sales of GOSS were filed in the last 90 days.
Who owns GOSS? Hedge funds and superinvestors
16 13F filers hold GOSS among their 50 largest positions, worth $28.5M combined. The biggest bets by portfolio weight are Worth Venture Partners, LLC (20.5%), DeepCurrents Investment Group LLC (7.7%) and Kalehua Capital Management LLC (1.3%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| 683 Capital Management, LLCHedge fund | 0.6% | $6.5M | 39,198,868 | — | Q2 2026 |
| DeepCurrents Investment Group LLCHedge fund | 7.7% | $6.0M | 37,665,073 | New | Q2 2026 |
| Context Capital Management, LLCHedge fund | 0.6% | $4.8M | 28,946,459 | — | Q2 2026 |
| Worth Venture Partners, LLCVenture capital | 20.5% | $4.1M | 25,017,881 | — | Q2 2026 |
| Kalehua Capital Management LLCHedge fund | 1.3% | $1.8M | 11,149,363 | +49.2% shares | Q2 2026 |
| ARCH Venture Management, LLCVenture capital | 0.1% | $1.3M | 8,055,916 | +0.0% shares | Q2 2026 |
| Octagon Capital Advisors LPHedge fund | 0.1% | $1.3M | 7,750,000 | +0.0% shares | Q2 2026 |
| Samsara Biocapital, LLCHedge fund | 0.1% | $1.2M | 7,222,559 | +0.0% shares | Q2 2026 |
| Hhlr Advisors, Ltd.Hedge fund | 0.1% | $819K | 4,974,041 | +0.0% shares | Q2 2026 |
| MB Generational Wealth, LLCWealth manager | 0.2% | $365K | 2,217,451 | +44.7% shares | Q2 2026 |
| NEA Management Company, LLCHedge fund | 0.0% | $165K | 1,000,000 | +0.0% shares | Q2 2026 |
| Ishara Investments LPHedge fund | 0.1% | $135K | 820,000 | +0.0% shares | Q2 2026 |
| Velan Capital Investment Management LPHedge fund | 0.0% | $12K | 70,000 | +0.0% shares | Q2 2026 |
| Skaana Management L.P.Hedge fund | 0.0% | $7K | 40,200 | +0.0% shares | Q2 2026 |
| R.H. Investment Group, LLCWealth manager | 0.0% | $4K | 26,300 | +0.0% shares | Q2 2026 |
| Algorithmic Investment Models, LLCAsset manager | 0.0% | $4K | 22,091 | +105.1% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 16). Screen GOSS in the grand portfolio →
GOSS stock trades by members of Congress
No member of Congress has disclosed a trade in GOSS.
GOSS questions and answers
Are insiders buying GOSS stock?
No open-market insider purchases or sales of GOSS were filed in the last 90 days.
Which hedge funds own GOSS?
16 13F filers hold GOSS among their 50 largest positions, worth $28.5M combined. The biggest bets by portfolio weight are Worth Venture Partners, LLC (20.5%), DeepCurrents Investment Group LLC (7.7%) and Kalehua Capital Management LLC (1.3%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
Has Congress traded GOSS?
No member of Congress has disclosed a trade in GOSS.
Who is the largest holder of GOSS?
Among 13F filers, 683 Capital Management, LLC reports the largest GOSS position, $6.5M (39,198,868 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Worth Venture Partners, LLC's: 20.5% of its portfolio.
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