Form 4: Colleagium Pharmaceutical Executive Sells Shares

David Dieter, EVP & General Counsel of Collegium Pharmaceutical, Inc., reported a transaction involving the sale of 8,840 shares of common stock.

Summary

• David Dieter, EVP & General Counsel of Collegium Pharmaceutical, Inc., reported a transaction on March 17, 2026.
• The transaction involved the sale of 8,840 shares of common stock.
• These shares were withheld by the Issuer to satisfy applicable withholding taxes upon the vesting of restricted stock units.
• Following this transaction, Dieter beneficially owns 68,231 shares of common stock directly.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing, as the reported share transaction is a standard tax withholding event rather than a discretionary sale or purchase.

Negatives

• Executive David Dieter sold 8,840 shares of common stock.
• The sale was to cover tax withholding obligations upon the vesting of restricted stock units.

Future Outlook

No forward-looking statements or guidance were provided in this filing.

Industry Context

StockSavvy.ai notes that Form 4 filings are standard disclosures for insider transactions, providing transparency into executive stock dealings. This specific filing indicates a common practice of share withholding for tax purposes upon vesting of equity awards.

Stakeholder Impact

• Shareholders: The sale of shares by an executive for tax purposes is a routine event and is not expected to have a significant impact on the share price.

Key Dates

Keywords

Form 4, SEC Filing, Insider Transaction, Stock Sale, Collegium Pharmaceutical, David Dieter, Restricted Stock Units, Tax Withholding