Manning Anthony M. 4

What Happened

• Anthony M. Manning, a director of Monte Rosa Therapeutics (GLUE), exercised stock option(s) and sold shares on 2026-06-29. The filing shows he acquired 10,000 shares by exercising options at $4.16 each (cost $41,600) and sold 10,000 shares in an open‑market sale at $23.11 each (proceeds $231,100). The filing also reports a conversion/exercise of a derivative for 10,000 shares listed as disposed at $0 (no cash amount reported).

Key Details

• Transaction date: 2026-06-29.
• Option exercise (acquired): 10,000 shares at $4.16 — total cost $41,600.
• Open‑market sale (disposed): 10,000 shares at $23.11 — total proceeds $231,100.
• Derivative conversion/disposition: 10,000 shares reported disposed at $0 (no cash).
• Shares owned after transaction: not specified in the filing.
• Footnote: F1 — the shares underlying the option are fully vested and exercisable.
• Filing: submitted 2026-06-30; not marked late. Remarks include Exhibit 24.2 (Substitute Power of Attorney).

Context

• The sequence (exercise at $4.16 and same‑day sale at $23.11) is consistent with a common practice where options are exercised and some or all resulting shares are sold the same day to cover costs/taxes (often called a cashless exercise), though the filing itself does not state the insider’s motive.
• The separate derivative conversion listed at $0 indicates a non‑cash conversion or internal adjustment; the filing does not provide additional detail. As always, sales by insiders can be routine (liquidity/tax reasons) and are not necessarily a signal about company fundamentals.