ARWR
Arrowhead Phrmct (ARWR)
NASDAQ
$74.99+$0.88 (+1.19%)
Price as of Jul 13, 2026 7:59 PM EDT
  • $10.8B
    Market Cap
  • 298.23%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
12.89%
18.2M
-3.2M (-17.38%)
Mar 31, 2026
BLACKROCK FUNDING, INC. /DE
11.49%
16.2M
+342,088 (+2.11%)
Dec 31, 2024
BLACKROCK INC.
11.13%
15.7M
+336,569 (+2.15%)
Jun 30, 2024
VANGUARD GROUP INC
10.86%
15.3M
-742,749 (-4.86%)
Dec 31, 2025
AVORO CAPITAL ADVISORS LLC
7.60%
10.7M
+74,999 (+0.70%)
Mar 31, 2026
OPPENHEIMERFUNDS, INC.
5.54%
7.8M
-2,951 (-0.04%)
Mar 31, 2019
FMR LLC
5.16%
7.3M
+746,244 (+10.27%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions1.6B (74.73%)
  • Mutual Funds533.8M (24.67%)
  • Insiders13.0M (0.60%)
  • Other0 (0.00%)

Insider Transactions

  • 0.60% (13.0M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 5
    Number of InsiderSelling (last 12 months)
  • $3.5B
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Cohen Matthew Gregory
Award
Jun 15, 2026
$0.00
11,882
$0.00
11,882
Hamilton James C
Chief Medical Officer
Sell
Mar 05, 2026
$641,900.00
10,000
$64.19
236,958
O'Brien Patrick
COO
Gift
Jan 06, 2026
$0.00
540
$0.00
474,368
Apel Daniel Joseph
Chief Financial Officer
Award
Jan 06, 2026
$0.00
75,000
$0.00
176,200
O'Brien Patrick
COO
Gift
Jan 06, 2026
$0.00
540
$0.00
473,828
O'Brien Patrick
COO
Gift
Jan 06, 2026
$0.00
540
$0.00
473,288
O'Brien Patrick
COO
Gift
Jan 06, 2026
$0.00
440
$0.00
472,848
O'Brien Patrick
COO
Gift
Jan 06, 2026
$0.00
440
$0.00
472,408
O'Brien Patrick
COO
Award
Jan 06, 2026
$0.00
75,000
$0.00
547,408
Hamilton James C
Chief Medical Officer
Sell
Jan 05, 2026
$283,235.00
4,625
$61.24
207,497
Hamilton James C
Chief Medical Officer
Sell
Jan 05, 2026
$379,285.20
6,090
$62.28
201,407
Hamilton James C
Chief Medical Officer
Sell
Jan 05, 2026
$932,043.92
14,792
$63.01
186,615
Hamilton James C
Chief Medical Officer
Sell
Jan 05, 2026
$812,868.45
12,711
$63.95
173,904
Hamilton James C
Chief Medical Officer
Sell
Jan 05, 2026
$77,388.00
1,200
$64.49
172,704
Hamilton James C
Chief Medical Officer
Sell
Jan 05, 2026
$28,828.89
437
$65.97
172,267
Hamilton James C
Chief Medical Officer
Sell
Jan 05, 2026
$21,012.00
309
$68.00
171,958
Anzalone Christopher Richard
Chief Executive Officer
Sell
Jan 02, 2026
$488,566.08
7,416
$65.88
3.8M
Anzalone Christopher Richard
Chief Executive Officer
Sell
Jan 02, 2026
$383,136.69
5,771
$66.39
3.8M
Anzalone Christopher Richard
Chief Executive Officer
Exempt
Dec 29, 2025
$0.00
35,181
$0.00
16,545
Anzalone Christopher Richard
Chief Executive Officer
Exempt
Dec 29, 2025
$0.00
16,545
$0.00
0
Anzalone Christopher Richard
Chief Executive Officer
Exempt
Dec 29, 2025
$216,363.15
35,181
$6.15
3.8M
Anzalone Christopher Richard
Chief Executive Officer
Exempt
Dec 29, 2025
$101,751.75
16,545
$6.15
3.9M
Anzalone Christopher Richard
Chief Executive Officer
Sell
Dec 29, 2025
$2.4M
35,181
$69.33
3.8M
Anzalone Christopher Richard
Chief Executive Officer
Sell
Dec 29, 2025
$1.1M
16,545
$68.69
3.8M
Ferrari Mauro
Sell
Dec 26, 2025
$527,100.00
7,530
$70.00
69,053
Anzalone Christopher Richard
Chief Executive Officer
Sell
Dec 22, 2025
$684,119.96
10,012
$68.33
3.8M
Anzalone Christopher Richard
Chief Executive Officer
Sell
Dec 22, 2025
$177,219.90
2,574
$68.85
3.8M
Waddill William D.
Sell
Dec 19, 2025
$161,050.56
2,416
$66.66
62,514
Vakiener Victoria
Sell
Dec 19, 2025
$186,497.37
2,799
$66.63
42,964
Waddill William D.
Sell
Dec 19, 2025
$370,722.51
5,451
$68.01
57,063