Patrick O'Brien
CIK: 0001627183
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
ARROWHEAD PHARMACEUTICALS, INC.
Discretionary Trading P&L
Holdings
Transaction History (27 total)
- Jan 6, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Gift(G)Direct540 shares- - Jan 6, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Gift(G)Direct540 shares- - Jan 6, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Gift(G)Direct540 shares- - Jan 6, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Gift(G)Direct440 shares- - Jan 6, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Gift(G)Direct440 shares- - Jan 6, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Award(A)Direct75K shares- - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct13.5K shares at avg. $62.96$847K - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct11.8K shares at avg. $63.84$756K - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct2.7K shares at avg. $64.44$174K - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct900 shares at avg. $66.01$59K - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct313 shares at avg. $68.00$21K - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct600 shares at avg. $61.12$37K - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct900 shares at avg. $62.25$56K - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct5.9K shares at avg. $62.91$369K - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct2.3K shares at avg. $64.04$150K - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct46 shares at avg. $68.00$3K - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct4.4K shares at avg. $61.20$267K - Jan 5, 2026ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct6.2K shares at avg. $62.23$384K - Dec 31, 2025ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Gift(G)Direct560 shares- - Dec 31, 2025ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Gift(G)Direct560 shares- - Dec 31, 2025ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Gift(G)Direct560 shares- - Dec 31, 2025ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Gift(G)Direct560 shares- - Dec 31, 2025ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Gift(G)Direct560 shares- - Jan 7, 2025ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct8K shares at avg. $19.69$158K - Jan 6, 2025ARWR
ARROWHEAD PHARMACEUTICALS, INC.
Sale(S)Direct19.7K shares at avg. $19.69$387K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jan 6, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Gift(G) | 540 | - | $0 | Direct |
| Jan 6, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Gift(G) | 540 | - | $0 | Direct |
| Jan 6, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Gift(G) | 540 | - | $0 | Direct |
| Jan 6, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Gift(G) | 440 | - | $0 | Direct |
| Jan 6, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Gift(G) | 440 | - | $0 | Direct |
| Jan 6, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Award(A) | 75,000 | - | $0 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 13,451 | $62.96 | $846,875 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 11,842 | $63.84 | $755,993 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 2,700 | $64.44 | $173,988 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 900 | $66.01 | $59,409 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 313 | $68.00 | $21,284 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 600 | $61.12 | $36,672 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 900 | $62.25 | $56,025 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 5,873 | $62.91 | $369,470 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 2,336 | $64.04 | $149,597 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 46 | $68.00 | $3,128 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 4,368 | $61.20 | $267,322 | Direct |
| Jan 5, 2026 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 6,164 | $62.23 | $383,586 | Direct |
| Dec 31, 2025 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Gift(G) | 560 | - | $0 | Direct |
| Dec 31, 2025 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Gift(G) | 560 | - | $0 | Direct |
| Dec 31, 2025 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Gift(G) | 560 | - | $0 | Direct |
| Dec 31, 2025 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Gift(G) | 560 | - | $0 | Direct |
| Dec 31, 2025 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Gift(G) | 560 | - | $0 | Direct |
| Jan 7, 2025 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 8,000 | $19.69 | $157,520 | Direct |
| Jan 6, 2025 | ARWR ARROWHEAD PHARMACEUTICALS, INC. | Sale(S) | 19,658 | $19.69 | $387,066 | Direct |
1-25 of 27 transactions
About O'Brien Patrick
O'Brien Patrick (SEC CIK 0001627183) files insider reports with the SEC as COO of ARROWHEAD PHARMACEUTICALS, INC. (ARWR).
Signal8 holds 3 ownership filings by O'Brien Patrick, all Form 4s, filed between Jan 7, 2025 and Jan 8, 2026. Those filings report 27 transactions, from Jan 4, 2025 to Jan 6, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on O'Brien Patrick's filings is in PASADENA, CA.
Recent filings by O'Brien Patrick
- Jan 6, 2026: Gifts of ARWR shares (5 lines, Form 4, code G).
- Jan 6, 2026: Grant or award of ARWR shares (Form 4, code A).
- Jan 5, 2026: Open-market sales of ARWR shares (12 lines, Form 4, code S).
- Dec 31, 2025: Gifts of ARWR shares (5 lines, Form 4, code G).
- Jan 7, 2025: Open-market sale of ARWR shares (Form 4, code S).
Other insiders filing for ARROWHEAD PHARMACEUTICALS, INC. (ARWR)
- OLUKOTUN ADEOYE Y, Director
- PERRY MICHAEL S, Director
- Cohen Matthew Gregory, Director
- Lu Hongbo, Director
- Apel Daniel Joseph, Chief Financial Officer
- Hamilton James C, Chief Medical Officer