Utter Christine Marie 4

What Happened
Christine Utter, SVP and Chief Accounting Officer of PTC Therapeutics, sold 2,494 shares on 2026-02-18 at $69.36 per share, generating $172,984. The Form 4 indicates this was an open-market sale executed as a sell-to-cover to satisfy tax withholding tied to recent RSU vesting — a routine tax-related disposition rather than an indicative market-timing purchase.

Key Details

• Transaction date and price: 2026-02-18, sale of 2,494 shares at $69.36 per share (total $172,984).
• Transaction type/code: Sale (S); footnote indicates tax withholding (F).
• Shares owned after transaction: Not disclosed in the provided filing.
• Footnote: Shares were automatically sold pursuant to an irrevocable sell-to-cover election to satisfy tax withholding on the vesting of 3,500 RSUs from a Feb 15, 2024 grant of 14,000 RSUs and 1,450 RSUs from a Feb 15, 2024 grant of 2,900 RSUs.
• Filing: Form filed on 2026-02-20 reporting the 2026-02-18 transaction (no late filing flagged in the provided data).

Context
This was a sell-to-cover tied to RSU vesting (automatic sale to meet tax obligations). Such sales are common and typically reflect tax-related mechanics rather than a direct signal of the insider’s view on the stock. Purchases by insiders often carry more weight for interpreting sentiment than routine tax-withholding sales.