O'Brien Patrick

Officer · ARWR

As of 2026-09-16, O'Brien Patrick has 27 Form 4 transactions on record across 1 company — 23 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 sales filed in January in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $36.0MIndirect: $0$36.0Mas of 2026-09-16
  • Direct $36.0M
  • Indirect $0
ARWRdirect547,408 sh$36.0M

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

ARWR · 27 trades
2026-01-06: Gift, 540 sh ($0)2026-01-06: Award / grant, 75,000 sh ($0)2026-01-06: Gift, 440 sh ($0)2026-01-06: Gift, 440 sh ($0)2026-01-06: Gift, 540 sh ($0)2026-01-06: Gift, 540 sh ($0)2026-01-05: Sale, 13,451 sh ($847K)2026-01-05: Sale, 11,842 sh ($756K)2026-01-05: Sale, 6,164 sh ($384K)2026-01-05: Sale, 5,873 sh ($369K)2026-01-05: Sale, 4,368 sh ($267K)2026-01-05: Sale, 2,700 sh ($174K)2026-01-05: Sale, 2,336 sh ($150K)2026-01-05: Sale, 900 sh ($59K)2026-01-05: Sale, 900 sh ($56K)2026-01-05: Sale, 600 sh ($37K)2026-01-05: Sale, 313 sh ($21K)2026-01-05: Sale, 46 sh ($3K)2025-12-31: Gift, 560 sh ($0)2025-12-31: Gift, 560 sh ($0)2025-12-31: Gift, 560 sh ($0)2025-12-31: Gift, 560 sh ($0)2025-12-31: Gift, 560 sh ($0)2025-01-07: Sale, 8,000 sh ($158K)2025-01-06: Sale, 19,658 sh ($387K)2025-01-06: Sale, 9,526 sh ($191K)2025-01-04: Award / grant, 100,000 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-01-05ARWRSale13,451 @ $62.96$847K−2.6% of holding500,418Form 4
2026-01-05ARWRSale11,842 @ $63.84$756K−2.4% of holding488,576Form 4
2026-01-05ARWRSale6,164 @ $62.23$384K−1.2% of holding513,869Form 4
2026-01-05ARWRSale5,873 @ $62.91$369K−1.2% of holding477,290Form 4
2026-01-05ARWRSale4,368 @ $61.20$267K−0.8% of holding520,033Form 4
2026-01-05ARWRSale2,700 @ $64.44$174K−0.6% of holding485,876Form 4
2026-01-05ARWRSale2,336 @ $64.04$150K−0.5% of holding474,954Form 4
2026-01-05ARWRSale900 @ $66.01$59K−0.2% of holding484,976Form 4
2026-01-05ARWRSale900 @ $62.25$56K−0.2% of holding483,163Form 4
2026-01-05ARWRSale600 @ $61.12$37K−0.1% of holding484,063Form 4
2026-01-05ARWRSale313 @ $68.00$21K−0.1% of holding484,663Form 4
2026-01-05ARWRSale46 @ $68.00$3K−0.0% of holding474,908Form 4
2025-01-07ARWRSale8,000 @ $19.69$158K−1.5% of holding527,201Form 4
2025-01-06ARWRSale19,658 @ $19.69$387K−3.5% of holding544,727Form 4
2025-01-06ARWRSale9,526 @ $20.10$191K−1.7% of holding535,201Form 4
12 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-01-06ARWRGift540474,368Form 4
2026-01-06ARWRAward / grant75,000547,408Form 4
2026-01-06ARWRGift440472,408Form 4
2026-01-06ARWRGift440472,848Form 4
2026-01-06ARWRGift540473,288Form 4
2026-01-06ARWRGift540473,828Form 4
2025-12-31ARWRGift560524,401Form 4
2025-12-31ARWRGift560524,961Form 4
2025-12-31ARWRGift560525,521Form 4
2025-12-31ARWRGift560526,081Form 4
2025-12-31ARWRGift560526,641Form 4
2025-01-04ARWRAward / grant100,000564,385Form 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.