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Home/Insiders/O'Brien Patrick

O'Brien Patrick

Insider

Insider
Total trades
28
Bought (open market)
$0
Sold (open market)
$4.9M
Tickers traded
1
O’Brien Patrick, COO and General Counsel, has demonstrated a consistent pattern of selling shares in Arrowhead Pharmaceuticals (ARWR) over the past three years, with no recorded purchases. According to SEC Form 4 filings, Patrick executed 28 transactions totaling $4.94 million in sales, all concentrated in ARWR. The most recent activity occurred on January 5–6, 2026, with nine sales ranging from $3,128 to $846,874.96, including two high-value transactions exceeding $750,000. This follows a similar trend from January 2025, when Patrick sold shares worth $191,472.60 and $387,066.02, as well as January 2024, when multiple sales—including a $454,216.65 transaction—were reported. The filings indicate that Patrick’s disposals are clustered in early January each year, suggesting a possible structured selling plan. While some transactions were modest (under $100,000), others were substantial, such as the $755,993.28 and $846,874.96 sales in early 2026. The absence of any buys across all filings reinforces a clear divestment trend. The transactions include both open-market sales (code "S") and gifts (code "G"), though the latter carried no reported value. Given the multiyear consistency and absence of offsetting purchases, the data reflects a sustained reduction in Patrick’s ARWR holdings.

AI-assisted summary

12-month activity

Monthly buy vs sell totals from O'Brien Patrick's Form 4 filings.

BuysSellsFilings with no price (gifts, grants)
Show data table
MonthBuysSellsFilings
October 2025$0$00
November 2025$0$00
December 2025$0$01
January 2026$0$3.1M14
February 2026$0$00
March 2026$0$00
April 2026$0$00
May 2026$0$00
June 2026$0$00
July 2026$0$00
August 2026$0$00
September 2026$0$00

Recent trades

Most recent Form 4 filings by O'Brien Patrick.

  • O'Brien Patrickgranted75,000 shares ofARWRat $0Jan 6 · filed Jan 8Details
  • O'Brien Patrickgifted440 shares ofARWRat $0Jan 6 · filed Jan 8Details
  • O'Brien Patrickgifted540 shares ofARWRat $0Jan 6 · filed Jan 8Details

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O'Brien Patrick
sold
4,368 shares of
ARWR
at $61.2
$267KJan 5Details
  • O'Brien Patricksold46 shares ofARWRat $68$3KJan 5Details
  • O'Brien Patricksold2,336 shares ofARWRat $64.04$150KJan 5Details
  • O'Brien Patricksold5,873 shares ofARWRat $62.91$369KJan 5Details
  • O'Brien Patricksold600 shares ofARWRat $61.12$37KJan 5Details
  • O'Brien Patricksold313 shares ofARWRat $68$21KJan 5Details
  • O'Brien Patricksold900 shares ofARWRat $66.01$59KJan 5Details
  • O'Brien Patricksold2,700 shares ofARWRat $64.44$174KJan 5Details
  • O'Brien Patricksold11,842 shares ofARWRat $63.84$756KJan 5Details
  • O'Brien Patricksold13,451 shares ofARWRat $62.96$847KJan 5Details
  • O'Brien Patricksold6,164 shares ofARWRat $62.23$384KJan 5Details
  • O'Brien Patrickgifted560 shares ofARWRat $0Dec 31, 2025 · filed Jan 5Details
  • O'Brien Patricksold8,000 shares ofARWRat $19.69$158KJan 7, 2025Details
  • O'Brien Patricksold9,526 shares ofARWRat $20.1$191KJan 6, 2025 · filed Jan 7, 2025Details
  • O'Brien Patricksold19,658 shares ofARWRat $19.69$387KJan 6, 2025 · filed Jan 7, 2025Details
  • O'Brien Patrickgranted100,000 shares ofARWRat $0Jan 4, 2025 · filed Jan 7, 2025Details
  • O'Brien Patricksold12,741 shares ofARWRat $35.65$454KJan 5, 2024Details
  • View all 28 trades →