Companies / Solid Biosciences Inc.
Solid Biosciences Inc.
Nasdaq: SLDBCIK 1707502CHARLESTOWN, MA
Financials · FY2022
Ownership
107.2M shares outstanding · as of Aug 4, 2026
Ownership
| Insiders | 0.87% | 937,802 |
| Institutions | 88.56% | 94,954,311 |
| Public float | 10.57% | 11,333,125 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 15
View all →| Insider | % of shares | Shares |
|---|---|---|
Cumbo AlexanderCEOPresident and CEO · Director | 0.22% | 235,405 |
Smith Ian FDirector | 0.13% | 134,705 |
Ganot IlanDirector | 0.12% | 126,771 |
Howton David TChief Operating Officer | 0.10% | 105,077 |
Tan KevinCFO & Treasurer | 0.09% | 99,422 |
Brooks GabrielChief Medical Officer | 0.08% | 89,466 |
Hanrahan JessieChief Regulatory Officer | 0.07% | 74,318 |
Herzich PaulChief Technology Officer | 0.07% | 72,638 |
Edelman JosephDirector · 10% owner | — | — |
Kolchinsky Peter10% owner | — | — |
Institutional holders 132
View all →| Holder | Value | % of shares |
|---|---|---|
| $85.73M | 11.10% | |
| $69.27M | 6.47% | |
| $67.25M | 8.71% | |
| $44.62M | 7.38% | |
| $43.37M | 7.17% | |
| $41.71M | 3.89% | |
| $32.80M | 5.42% | |
| $28.88M | 3.74% | |
| $19.49M | 3.22% | |
| $15.02M | 2.48% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common Stock | $30.85M | +3.1M +283.97% | 4,175,365 3.89% of shares | medium |
| Q1 2026 as of | Janus Henderson Group PLC 13F manager | New | Common Stock | $28.88M | +4.0M | 4,010,695 3.74% of shares | medium |
| Q1 2026 as of | RA Capital Management, L.P. 13F manager | Add | Common Stock | $25.41M | +3.5M +60.72% | 9,339,978 8.71% of shares | medium |
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | Common Stock | $20.63M | +2.1M +42.40% | 6,934,248 6.47% of shares | medium |
| Q2 2025 as of | Boxer Capital Management, LLC 13F manager | Exit | Common Stock | $-4.59M | -1.2M -100.00% | 0 | low |
| Q3 2025 as of | Boxer Capital Management, LLC 13F manager | New | Common Stock | $3.70M | +600K | 600,000 0.56% of shares | low |
| Q1 2026 as of | Adage Capital Partners Gp, L.L.C. 13F manager | Add | Common Stock | $2.57M | +357K +25.46% | 1,756,506 1.64% of shares | low |
| Q4 2025 as of | Bank of America Corp /De 13F manager | Trim | Common Stock | $-2.51M | -446K -56.42% | 344,294 0.32% of shares | low |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Adage Capital Management, L.P. | Passive13G/A | — |
| Vestal Point Capital, LP | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| SLDB | Common Stock | 83422E204 |