Alexander Cumbo is CCO & VP at Sarepta Therapeutics, Inc. (SRPT). They have made 10 open-market trades across 2 companies since 2017, most recently 2026-02-18.
CIK 0001685994
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 10 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SLDB | 252,049 | $1.4M |
| SRPT | 8,567 | $146K |
| Total | $1.5M |
Shares reported on the most recent Form 4, priced at the 2026-02-18 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SLDB | SELL | 2026-02-18 | 2026-02-18 | $5.82 | $97K | +6.7% | +20.5% | +4.7% |
| SLDB | SELL | 2026-02-04 | 2026-02-06 | $6.44 | $315K | -10.5% | +22.1% | +7.7% |
| SLDB | SELL | 2026-02-02 | 2026-02-02 | $6.44 | $517K | -5.1% | -4.2% | +12.6% |
| SLDB | SELL | 2025-12-03 | 2025-12-04 | $5.11 | $110K | -2.2% | -10.4% | +3.2% |
| SLDB | SELL | 2025-02-14 | 2025-02-18 | $3.96 | $45K | +2.6% | -13.8% | -46.8% |
| SLDB | SELL | 2024-12-03 | 2024-12-04 | $5.60 | $124K | -11.0% | -19.9% | +2.7% |
| SLDB | SELL · 10b5-1 | 2023-12-04 | 2023-12-05 | $2.77 | $33K | +38.0% | +46.5% | +157.7% |
| SRPT | SELL | 2019-12-13 | 2019-12-17 | $125.50 | $5.3M | -1.4% | -0.3% | -34.8% |
| SRPT | SELL | 2019-02-01 | 2019-02-01 | $140.00 | $2.1M | -3.1% | +4.6% | -16.4% |
| SRPT | SELL | 2018-07-09 | 2018-07-11 | $137.32 | $9.3M | -3.9% | -6.1% | -6.3% |
| SRPT | SELL | 2017-07-20 | 2017-07-21 | $41.00 | $243K | -10.7% | -16.2% | +19.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.