SLDB · Insider trading · 13F holders · Congress trades
Solid Biosciences Inc. (SLDB)
Who is buying and selling SLDB: 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
- $25K
- Congress trades, 12 months
- 0
SLDB at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 SLDB insider filed 1 sale worth $25K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
- 16 13F filers hold SLDB among their 50 largest positions, worth $562.0M combined, including Joseph Edelman and Peter Kolchinsky. The biggest bets by portfolio weight are Monashee Investment Management LLC (9.2%), Bain Capital Life Sciences Investors, LLC (5.8%) and Ally Bridge Group (NY) LLC (3.3%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
- No member of Congress has disclosed a trade in SLDB.
- SLDB last closed at $6.39 on Oct 29, 2026.
SLDB insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 SLDB insider filed 1 sale worth $25K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 20, 2026 | Brooks Gabriel | Chief Medical Officer | Sale10b5-1 | 4,374 | $5.62 | $25K | SEC |
Who owns SLDB? Hedge funds and superinvestors
16 13F filers hold SLDB among their 50 largest positions, worth $562.0M combined, including Joseph Edelman and Peter Kolchinsky. The biggest bets by portfolio weight are Monashee Investment Management LLC (9.2%), Bain Capital Life Sciences Investors, LLC (5.8%) and Ally Bridge Group (NY) LLC (3.3%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
Superinvestors holding SLDB: Joseph Edelman 1.9% · Peter Kolchinsky 1.0%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Peter KolchinskyHedge fund | 1.0% | $120.2M | 12,036,126 | +28.9% shares | Q2 2026 |
| Joseph EdelmanHedge fund | 1.9% | $118.9M | 11,906,646 | +0.0% shares | Q2 2026 |
| Bain Capital Life Sciences Investors, LLCAsset manager | 5.8% | $98.0M | 9,808,819 | +0.0% shares | Q2 2026 |
| Siren, L.L.C.Investment manager | 1.6% | $76.8M | 7,690,405 | +0.0% shares | Q2 2026 |
| Armistice Capital, LLCHedge fund | 1.2% | $42.7M | 4,278,000 | +33.7% shares | Q2 2026 |
| Deep Track Capital, LPHedge fund | 0.5% | $35.6M | 3,565,062 | +0.0% shares | Q2 2026 |
| Vestal Point Capital, LPHedge fund | 0.5% | $21.6M | 2,160,000 | -56.8% shares | Q2 2026 |
| Redmile Group, LLCHedge fund | 1.3% | $19.5M | 1,948,695 | -3.1% shares | Q2 2026 |
| Silverarc Capital Management, LLCHedge fund | 0.7% | $6.7M | 668,450 | — | Q2 2026 |
| Birchview Capital, LPWealth manager | 3.1% | $6.7M | 666,196 | +6.4% shares | Q2 2026 |
| Monashee Investment Management LLCInstitutional asset manager | 9.2% | $5.0M | 500,000 | -64.8% shares | Q2 2026 |
| Stempoint Capital LPHedge fund | 0.6% | $3.6M | 358,780 | — | Q2 2026 |
| Boxer Capital Management, LLCHedge fund | 0.2% | $3.0M | 300,000 | +0.0% shares | Q2 2026 |
| Ally Bridge Group (NY) LLCHedge fund | 3.3% | $2.6M | 255,959 | -66.6% shares | Q2 2026 |
| DeepCurrents Investment Group LLCHedge fund | 0.8% | $591K | 59,173 | New | Q2 2026 |
| Knott David M JrInvestment manager | 0.3% | $562K | 56,208 | — | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 16). Screen SLDB in the grand portfolio →
SLDB stock trades by members of Congress
No member of Congress has disclosed a trade in SLDB.
SLDB questions and answers
Are insiders buying SLDB stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 SLDB insider filed 1 sale worth $25K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own SLDB?
16 13F filers hold SLDB among their 50 largest positions, worth $562.0M combined, including Joseph Edelman and Peter Kolchinsky. The biggest bets by portfolio weight are Monashee Investment Management LLC (9.2%), Bain Capital Life Sciences Investors, LLC (5.8%) and Ally Bridge Group (NY) LLC (3.3%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
Has Congress traded SLDB?
No member of Congress has disclosed a trade in SLDB.
Who is the largest holder of SLDB?
Among 13F filers, Peter Kolchinsky reports the largest SLDB position, $120.2M (12,036,126 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Monashee Investment Management LLC's: 9.2% of its portfolio.
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