RTW INVESTMENTS, LP

Director · Other reporting person · Ten-percent owner · OBIO, KLRA, RCKT

As of 2026-09-16, RTW INVESTMENTS, LP has 120 Form 4 transactions on record across 3 companies — 103 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Pattern in the record: open-market purchases filed in April in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $0Indirect: $14.3M$14.3Mas of 2026-09-16
  • Direct $0
  • Indirect $14.3M
OBIOindirect2,386,331 sh$14.3M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

RCKT · 16 trades
2025-09-19: Exercise, 1,000,000 sh ($40.0M)2025-09-19: Other acquisition, 1,000,000 sh ($3.1M)2025-09-19: Exercise, 59,000 sh ($1.1M)2025-09-19: Exercise, 41,000 sh ($783K)2025-09-19: Other acquisition, 59,000 sh ($183K)2025-09-19: Other acquisition, 41,000 sh ($127K)2025-09-19: Exercise, 1 sh2025-09-19: Exercise, 1 sh2025-09-19: Exercise, 1 sh2025-09-19: Exercise, 1 sh2025-09-19: Exercise, 1 sh2025-09-19: Exercise, 1 sh2025-09-19: Exercise, 1 sh2025-09-19: Exercise, 1 sh2025-09-19: Exercise, 1 sh2024-12-12: Award / grant, 400,000 sh ($5.0M)
KLRA · 10 trades
2026-04-20: Purchase, 500,000 sh ($8.0M)2026-04-20: Conversion, 10,276,820 sh2026-04-20: Conversion, 8,250,000 sh2026-04-20: Conversion, 2,026,820 sh2026-04-20: Conversion, 8,250,000 sh2026-04-20: Conversion, 8,250,000 sh2026-04-20: Conversion, 2,026,820 sh2026-04-20: Conversion, 10,276,820 sh2026-04-20: Conversion, 10,276,820 sh2026-04-20: Conversion, 2,026,820 sh
OBIO · 6 trades
2026-04-27: Exercise, 1,250,032 sh ($3.4M)2026-04-27: Sale, 32 sh ($132)2026-04-27: Exercise, 1,250,032 sh ($125)2025-08-04: Purchase, 3,636,363 sh ($10.0M)2025-04-30: Purchase, 49,900 sh ($149K)2025-04-29: Purchase, 50,000 sh ($126K)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-04-27OBIOSale32 @ $4.13$132−0.0% of holding9,556,063Form 4
2026-04-20KLRAPurchase500,000 @ $16.00$8.0M+4.9% of holding10,776,820Form 4
2025-08-04OBIOPurchase3,636,363 @ $2.75$10.0Mownership Δ n/a3,636,363Form 4
2025-04-30OBIOPurchase49,900 @ $2.99$149K+0.6% of holding8,306,063Form 4
2025-04-29OBIOPurchase50,000 @ $2.53$126K+0.6% of holding8,256,163Form 4
115 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-07-21—Other acquisition19,9340Form 4
2026-07-21—Other acquisition209,2540Form 4
2026-07-21—Other acquisition161,8070Form 4
2026-07-21—Other acquisition19,9340Form 4
2026-07-21—Other acquisition1,7711,771Form 4
2026-07-21—Other acquisition1,7710Form 4
2026-07-21—Other acquisition209,254209,254Form 4
2026-07-21—Other acquisition161,807161,807Form 4
2026-07-21—Other acquisition19,93419,934Form 4
2026-07-21—Other acquisition1,7710Form 4
2026-07-21—Other acquisition209,254209,254Form 4
2026-07-21—Other acquisition161,807161,807Form 4
2026-07-21—Other acquisition19,93419,934Form 4
2026-07-21—Other acquisition1,7711,771Form 4
2026-07-21—Other acquisition209,2540Form 4
2026-07-21—Other acquisition161,8070Form 4
2026-07-21—Other acquisition19,9340Form 4
2026-07-21—Other acquisition1,7710Form 4
2026-07-21—Other acquisition209,254209,254Form 4
2026-07-21—Other acquisition161,807161,807Form 4
2026-07-21—Other acquisition19,93419,934Form 4
2026-07-21—Other acquisition1,7711,771Form 4
2026-07-21—Other acquisition209,2540Form 4
2026-07-21—Other acquisition161,8070Form 4
2026-04-27OBIOExercise1,250,0322,386,331Form 4
2026-04-27OBIOExercise1,250,0329,556,095Form 4
2026-04-20KLRAConversion10,276,82010,276,820Form 4
2026-04-20KLRAConversion8,250,0000Form 4
2026-04-20KLRAConversion2,026,8200Form 4
2026-04-20KLRAConversion8,250,0000Form 4
2026-04-20KLRAConversion8,250,0000Form 4
2026-04-20KLRAConversion2,026,8200Form 4
2026-04-20KLRAConversion10,276,82010,276,820Form 4
2026-04-20KLRAConversion10,276,82010,276,820Form 4
2026-04-20KLRAConversion2,026,8200Form 4
2025-11-12—Award / grant991,5443,138,798Form 4
2025-11-12—Award / grant767,8482,427,089Form 4
2025-11-12—Award / grant96,896298,992Form 4
2025-11-12—Award / grant767,848767,848Form 4
2025-11-12—Award / grant991,544991,544Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.