Insider at

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Insider transactions

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3 buys (P) 0 sells (S) Net: $20,000,000 + 18 non-open-market transactions below Avg return of open purchases vs now: 9.8% last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

18 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
March 10, 2026 KRRO P 242,945 $11.11 $2,699,119 242,945 Indirect · Acquired -13.2% (price as of 2026-10-02)
March 10, 2026 KRRO P 207,100 $11.11 $2,300,881 1,297,893 Indirect +18.99% Acquired -13.2% (price as of 2026-10-02)
Feb. 9, 2026 SGP P 937,500 $16.00 $15,000,000 6,035,038 Indirect +18.39% Acquired 55.8% (price as of 2026-10-02)
Sept. 16, 2024 MBX P 500,000 $16.00 $8,000,000 3,614,486 Indirect +16.05% Acquired 265.7% (price as of 2026-10-02)
April 22, 2024 KRRO P 17,857 $56.00 $999,992 1,090,793 Indirect +1.66% Acquired -82.8% (price as of 2026-10-02)
July 17, 2023 SVRA P 333,333 $3.00 $999,999 24,471,264 Indirect +1.38% Acquired 60.3% (price as of 2026-10-02)
June 28, 2021 GLUE P 1,050,000 $19.00 $19,950,000 7,692,298 Indirect +15.81% Acquired -44.7% (price as of 2026-10-02)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

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DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
March 10, 2026 KRRO Pre-Funded Warrants Common Stock (242,945) $0.00 · 242,945 Acquired
Feb. 9, 2026 SGP Series B Preferred Stock Common Stock (1,619,240) · · 1,619,240 Disposed
Feb. 9, 2026 SGP Series C-1 Preferred Stock Common Stock (1,370,168) · · 1,370,168 Disposed
Feb. 9, 2026 SGP Series C-2 Preferred Stock Common Stock (1,370,168) · · 1,370,168 Disposed
Feb. 9, 2026 SGP Series D Preferred Stock Common Stock (737,962) · · 737,962 Disposed
Sept. 16, 2024 MBX Series B Convertible Preferred Stock Common Stock (2,091,383) · · 25,142,840 Disposed
Sept. 16, 2024 MBX Series A Convertible Preferred Stock Common Stock (1,023,103) · · 12,299,854 Disposed
June 28, 2021 GLUE Series A-2 convertible preferred stock Common Stock (2,715,968) · · 9,588,725 Disposed
June 28, 2021 GLUE Series B convertible preferred stock Common Stock (3,257,328) · · 11,500,000 Disposed
June 28, 2021 GLUE Series C convertible preferred Stock Common Stock (669,002) · · 2,361,912 Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 11 holdings

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Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
Feb. 5, 2026 SGP Series B Preferred Stock→ Common Stock (1,619,240) 1,619,240 Indirect
Feb. 5, 2026 SGP Series C-1 Preferred Stock→ Common Stock (1,370,168) 1,370,168 Indirect
Feb. 5, 2026 SGP Series C-2 Preferred Stock→ Common Stock (1,370,168) 1,370,168 Indirect
Feb. 5, 2026 SGP Series D Preferred Stock→ Common Stock (737,962) 737,962 Indirect
Sept. 12, 2024 MBX Series A Convertible Preferred Stock→ Common Stock (1,023,103) 1,023,103 Indirect
Sept. 12, 2024 MBX Series B Convertible Preferred Stock→ Common Stock (2,091,383) 2,091,383 Indirect
Nov. 7, 2023 KRRO Common Stock 1,072,936 Indirect
June 23, 2021 GLUE Series A-2 convertible preferred stock→ Common Stock (2,715,968) 2,715,968 Indirect
June 23, 2021 GLUE Series B convertible preferred stock→ Common Stock (3,257,328) 3,257,328 Indirect
June 23, 2021 GLUE Series C convertible preferred stock→ Common Stock (669,002) 669,002 Indirect
March 16, 2021 SVRA Common Stock 24,137,931 Indirect