SEC CIK 1557290

Arbuckle Stuart A

Reported ownership across 3 companies, sourced from SEC Form 4 filings and updated daily.

Current Positions

CompanyShares OwnedAs Of
VRTXview stock →63,3682025-07-01
RYTMview stock →11,7122026-06-23
ALNYview stock →6712026-05-20

Position History — RYTM

Reported shares owned immediately after each Form 4 transaction, over time.

03,9047,80811,7122024-062025-062026-06

Recent Filings — RYTM

DateActivitySharesPriceOwned After
2026-06-24Grant / award (derivative)2,324$0.002,324
2026-06-24Grant / award (derivative)3,691$0.003,691
2026-06-23Option exercise (derivative)4,712$0.000
2026-06-23Option exercise4,712—11,712
2025-06-24Grant / award (derivative)4,712$0.004,712
2025-06-24Grant / award (derivative)7,037$0.007,037
2025-06-18Option exercise (derivative)4,000$0.000
2025-06-18Option exercise4,000—7,000
2024-06-21Option exercise (derivative)3,000$0.000
2024-06-21Option exercise3,000—3,000
2024-06-18Grant / award (derivative)14,000$0.0014,000
2024-06-18Grant / award (derivative)4,000$0.004,000
2023-06-21Grant / award (derivative)3,000$0.003,000
2023-06-21Grant / award (derivative)14,000$0.0014,000
2022-06-08Grant / award (derivative)20,000$0.0020,000
2021-06-09Grant / award (derivative)15,000$0.0015,000
2020-06-17Grant / award (derivative)18,500$0.0018,500
2019-07-30Grant / award (derivative)30,000$0.0030,000

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.