Alexander Cumbo insider trades: Solid Biosciences (SLDB) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Alexander reports to the SEC
and 1 more company
Open-market buys and sales
11 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Feb 18, 2026 | SLDB | ↓ Sell | 16,644 | $5.82 | $97K | Direct | Feb 18, 2026 (0d) |
| Feb 4, 2026 | SLDB | ↓ Sell | 48,913 | $6.44 | $315K | Direct | Feb 6, 2026 (2d) |
| Feb 2, 2026 | SLDB | ↓ Sell | 80,258 | $6.44 | $517K | Direct | Feb 2, 2026 (0d) |
| Dec 3, 2025 | SLDB | ↓ Sell | 10,808 | $5.11 | $55K | Direct | Dec 4, 2025 (1d) |
| Feb 14, 2025 | SLDB | ↓ Sell | 11,365 | $3.96 | $45K | Direct | Feb 18, 2025 (4d) |
| Dec 3, 2024 | SLDB | ↓ Sell | 11,114 | $5.60 | $62K | Direct | Dec 4, 2024 (1d) |
| Dec 4, 2023 | SLDB | ↓ Sell10b5-1 | 11,757 | $2.77 | $33K | Direct | Dec 5, 2023 (1d) |
| Dec 13, 2019 | SRPT | ↓ Sell | 42,000 | $125.50 | $5.3M | Direct | Dec 17, 2019 (4d) |
| Feb 1, 2019 | SRPT | ↓ Sell | 15,000 | $140.00 | $2.1M | Direct | Feb 1, 2019 (0d) |
| Jul 9, 2018 | SRPT | ↓ Sell10b5-1 | 33,782 | $137.32 | $4.6M | Direct | Jul 11, 2018 (2d) |
| Jul 20, 2017 | SRPT | ↓ Sell10b5-1 | 5,918 | $41.00 | $243K | Direct | Jul 21, 2017 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other SLDB insiders
Open-market trades in the last 12 months
About Alexander Cumbo's insider trades
Alexander Cumbo is President and CEO at Solid Biosciences (SLDB). Since Jul 20, 2017, Alexander has reported no open-market purchases and 11 sales worth $13.4M on SEC Form 4. In the last 12 months: 4 sales ($984K).
3 sales (37% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include grants and awards (23 filings), option exercises (13 filings), shares withheld for taxes (5 filings), shares returned to the company (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every SLDB insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.