Anderson Karen M. 4

What Happened

• Karen M. Anderson, Chief People Officer of Centessa Pharmaceuticals (CNTA), exercised options to acquire 41,076 ordinary shares at $8.01 per share (cost $329,019) and sold those 41,076 shares the same day in an open-market transaction for a weighted average price of $30.12 per share, generating gross proceeds of $1,237,382. The Form 4 also reports a related derivative disposition at $0.00 tied to the conversion/exercise event.

Key Details

• Transaction date: 2026-03-26 (Form 4 filed 2026-03-27)
• Exercise: 41,076 shares @ $8.01 = $329,019 (code M)
• Sale: 41,076 shares @ weighted avg $30.12 = $1,237,382 (code S); sale prices ranged $29.99–$30.44 (footnote)
• Net difference (gross proceeds minus exercise cost): ~$908,363 (before taxes/fees)
• Shares owned after transaction: not specified in the provided filing excerpt
• Footnotes: shares may be represented by ADS (1 ADS = 1 Ordinary Share); sales were effected under a Rule 10b5-1 trading plan adopted Nov 12, 2025; weighted-average sale price provided with per-price breakdown available on request; option vesting schedule noted in filing
• Timeliness: filing covers trades on 2026-03-26 and was filed on 2026-03-27 (not indicated as late)

Context

• This was an option exercise followed by an immediate sale of the resulting shares — commonly a cashless outcome where newly exercised shares are sold to realize proceeds. The sale was executed under a pre-established Rule 10b5-1 plan, which typically indicates the transactions were pre-planned rather than opportunistic trading. Sales are often routine for option exercises; purchases generally carry more direct bullish signal.