Cumbo Alexander 4

What Happened Alexander Cumbo, President, CEO and a director of Solid Biosciences (SLDB), disposed of 48,913 shares on Feb. 4, 2026 in an open-market/private sale. The reported weighted-average price was $6.44 per share (range $6.28–$6.60), for proceeds of approximately $315,093. This sale was a sell-to-cover to satisfy tax withholding following the vesting of previously granted restricted stock units, not an independent discretionary sale.

Key Details

• Transaction date: 2026-02-04; Form 4 filed 2026-02-06 (timely filing).
• Shares sold: 48,913; weighted-average price reported: $6.44; price range: $6.28–$6.60 (multiple trades).
• Reported value: ~$315,093.
• Reason/footnotes: Sale executed to cover withholding taxes after RSU vesting via a durable automatic sell-to-cover instruction (adopted Aug 18, 2024); sale not a discretionary trade (Footnote F1). Footnote F2 notes the weighted average and offers to provide per-price breakdown on request.
• Shares owned after transaction: not specified in the details provided.

Context This was a tax-withholding sale tied to vested RSUs (routine administrative transaction) rather than a market-timed bet on the company. Such sell-to-cover transactions are common and generally less informative about insider sentiment than outright open-market purchases.