IONIS PHARMACEUTICALS INC (IONS) Stock Ownership and Short Interest
USA - NASDAQ:IONS - US4622221004 - Common Stock
73.09 USD
+0.02 (+0.03%)
73.09 USD
0 (0%)
| Shares Outstanding | 159.39M |
| Float | 158.15M |
| Float Short Interest Percentage | 7.57% |
| Owners (insider) | 0.73% |
| Owners (institutional) | 108.22% |
| Owners (insider) change | -3.92% |
| Owners (institutional) change | 0.3% |
Insider Transactions
Top Institutional Holders
Insider Owners
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Oct 16, 2025 | Swayze Eric | Open Market Sale | 53 | 73.62 | $ 3,901.93 |
| Oct 15, 2025 | PARSHALL B LYNNE | Open Market Sale | 5000 | 71.74 | $ 358,721.50 |
| Oct 15, 2025 | Devers Shannon L. | Option Excercise | 8820 | 33.00 | $ 291,060.00 |
| Oct 15, 2025 | Devers Shannon L. | Open Market Sale | 7263 | 73.06 | $ 530,637.50 |
| Oct 15, 2025 | Swayze Eric | Option Excercise | 125 | 0.00 | $ 0.00 |
| Oct 14, 2025 | Birchler Brian | Option Excercise | 23900 | 53.77 | $ 1,285,103.00 |
| Oct 14, 2025 | Birchler Brian | Open Market Sale | 23900 | 72.13 | $ 1,723,987.11 |
| Oct 6, 2025 | Monia Brett P | Open Market Sale | 437 | 69.26 | $ 30,268.24 |
| Oct 6, 2025 | Baroldi Joseph | Open Market Sale | 1625 | 69.37 | $ 112,725.11 |
| Oct 6, 2025 | Swayze Eric | Open Market Sale | 6849 | 69.02 | $ 472,717.98 |
| Oct 6, 2025 | O'NEIL PATRICK R. | Option Excercise | 10200 | 52.87 | $ 539,274.00 |
| Oct 6, 2025 | O'NEIL PATRICK R. | Open Market Sale | 13441 | 69.74 | $ 937,337.63 |
| Oct 2, 2025 | O'NEIL PATRICK R. | Option Excercise | 64664 | 58.97 | $ 3,813,256.63 |
| Oct 2, 2025 | O'NEIL PATRICK R. | Open Market Sale | 64664 | 67.69 | $ 4,377,054.43 |
| Oct 2, 2025 | Baroldi Joseph | Option Excercise | 15000 | 31.80 | $ 477,000.00 |
| Oct 2, 2025 | Baroldi Joseph | Open Market Sale | 15000 | 68.01 | $ 1,020,210.00 |
| Oct 1, 2025 | WENDER JOSEPH H | Open Market Sale | 16800 | 65.50 | $ 1,100,384.88 |
| Oct 1, 2025 | Swayze Eric | Option Excercise | 27114 | 53.77 | $ 1,457,919.78 |
| Oct 1, 2025 | Swayze Eric | Open Market Sale | 27114 | 66.16 | $ 1,793,744.13 |
| Sep 30, 2025 | Geary Richard S | Option Excercise | 57900 | 53.77 | $ 3,113,283.00 |
| Sep 30, 2025 | Geary Richard S | Open Market Sale | 57900 | 65.24 | $ 3,777,668.13 |
| Sep 30, 2025 | HOUGEN ELIZABETH L | Option Excercise | 49800 | 53.77 | $ 2,677,746.00 |
| Sep 30, 2025 | HOUGEN ELIZABETH L | Open Market Sale | 49800 | 65.26 | $ 3,249,733.86 |
| Sep 29, 2025 | O'NEIL PATRICK R. | Option Excercise | 25300 | 56.78 | $ 1,436,534.00 |
| Sep 29, 2025 | O'NEIL PATRICK R. | Open Market Sale | 25300 | 64.62 | $ 1,634,921.48 |
| Sep 12, 2025 | O'NEIL PATRICK R. | Option Excercise | 1700 | 56.78 | $ 96,526.00 |
| Sep 12, 2025 | O'NEIL PATRICK R. | Open Market Sale | 1700 | 64.58 | $ 109,787.19 |
| Sep 9, 2025 | Baroldi Joseph | Option Excercise | 11950 | 31.80 | $ 380,010.00 |
| Sep 9, 2025 | Baroldi Joseph | Open Market Sale | 11950 | 62.16 | $ 742,838.29 |
| Sep 9, 2025 | O'NEIL PATRICK R. | Option Excercise | 21000 | 60.69 | $ 1,274,580.00 |
| Sep 9, 2025 | O'NEIL PATRICK R. | Open Market Sale | 21000 | 64.56 | $ 1,355,661.30 |
| Sep 5, 2025 | Baroldi Joseph | Option Excercise | 250 | 31.80 | $ 7,950.00 |
| Sep 5, 2025 | Baroldi Joseph | Open Market Sale | 250 | 62.00 | $ 15,500.00 |
| Sep 5, 2025 | BENNETT C FRANK | Open Market Sale | 6000 | 59.60 | $ 357,580.80 |
| Sep 3, 2025 | LOSCALZO JOSEPH | Option Excercise | 16000 | 24.42 | $ 390,720.00 |
| Sep 3, 2025 | LOSCALZO JOSEPH | Open Market Sale | 16000 | 60.15 | $ 962,371.20 |
| Sep 3, 2025 | Monia Brett P | Option Excercise | 203814 | 44.32 | $ 9,032,038.80 |
| Sep 3, 2025 | Monia Brett P | Open Market Sale | 203814 | 60.32 | $ 12,294,703.00 |
| Sep 3, 2025 | KLEIN JOSEPH III | Option Excercise | 28000 | 0.00 | $ 0.00 |
| Sep 3, 2025 | KLEIN JOSEPH III | Open Market Sale | 28000 | 60.00 | $ 1,680,000.00 |
| Sep 3, 2025 | KLEIN JOSEPH III | Option Excercise | 28000 | 0.00 | $ 0.00 |
| Sep 3, 2025 | KLEIN JOSEPH III | Open Market Sale | 28000 | 60.00 | $ 1,680,000.00 |
| Sep 3, 2025 | Devers Shannon L. | Option Excercise | 3162 | 36.12 | $ 114,206.52 |
| Sep 3, 2025 | Devers Shannon L. | Open Market Sale | 3162 | 61.02 | $ 192,942.71 |
| Sep 3, 2025 | Schneider Eugene | Option Excercise | 19658 | 53.77 | $ 1,057,010.66 |
| Sep 3, 2025 | Schneider Eugene | Open Market Sale | 19658 | 60.81 | $ 1,195,420.87 |
| Sep 3, 2025 | Baroldi Joseph | Option Excercise | 32800 | 31.80 | $ 1,043,040.00 |
| Sep 3, 2025 | Baroldi Joseph | Open Market Sale | 32800 | 59.34 | $ 1,946,220.28 |
| Sep 3, 2025 | BENNETT C FRANK | Option Excercise | 59691 | 55.44 | $ 3,309,232.50 |
| Sep 2, 2025 | WENDER JOSEPH H | Open Market Sale | 28000 | 57.58 | $ 1,612,155.44 |
| Sep 2, 2025 | PARSHALL B LYNNE | Open Market Sale | 20000 | 50.91 | $ 1,018,297.50 |
| Sep 2, 2025 | Geary Richard S | Open Market Sale | 10000 | 50.37 | $ 503,671.00 |
| Sep 2, 2025 | WENDER JOSEPH H | Open Market Sale | 28000 | 57.58 | $ 1,612,155.44 |
| Sep 2, 2025 | O'NEIL PATRICK R. | Option Excercise | 89900 | 45.10 | $ 4,054,726.00 |
| Sep 2, 2025 | O'NEIL PATRICK R. | Open Market Sale | 89900 | 60.03 | $ 5,396,843.39 |
| Sep 2, 2025 | BENNETT C FRANK | Open Market Sale | 38909 | 59.14 | $ 2,301,263.58 |
| Sep 2, 2025 | Swayze Eric | Open Market Sale | 11130 | 49.67 | $ 552,861.68 |
| Aug 29, 2025 | O'NEIL PATRICK R. | Other Aquisition | 331 | 27.71 | $ 9,172.01 |
| Aug 29, 2025 | Birchler Brian | Other Aquisition | 166 | 27.71 | $ 4,599.86 |
| Aug 29, 2025 | Monia Brett P | Other Aquisition | 189 | 27.71 | $ 5,237.19 |
| Aug 29, 2025 | Geary Richard S | Other Aquisition | 165 | 27.71 | $ 4,572.15 |
| Aug 29, 2025 | BENNETT C FRANK | Other Aquisition | 213 | 27.71 | $ 5,902.23 |
| Aug 22, 2025 | Diaz Allene M. | Open Market Sale | 1427 | 42.53 | $ 60,687.17 |
| Aug 18, 2025 | BENNETT C FRANK | Option Excercise | 10000 | 32.60 | $ 326,000.00 |
| Aug 18, 2025 | BENNETT C FRANK | Open Market Sale | 10000 | 43.98 | $ 439,776.00 |
| Aug 6, 2025 | PARSHALL B LYNNE | Open Market Sale | 5000 | 41.93 | $ 209,646.10 |
| Aug 5, 2025 | Geary Richard S | Open Market Sale | 10000 | 42.86 | $ 428,593.00 |
| Aug 4, 2025 | Schneider Eugene | Open Market Sale | 9549 | 42.80 | $ 408,701.02 |
| Jul 30, 2025 | Monia Brett P | Option Excercise | 2432 | 32.60 | $ 79,283.20 |
| Jul 30, 2025 | Monia Brett P | Open Market Sale | 2432 | 45.00 | $ 109,440.00 |
| Jul 15, 2025 | YANG MICHAEL J. | Option Excercise | 4079 | 0.00 | $ 0.00 |
| Jul 15, 2025 | WENDER JOSEPH H | Option Excercise | 4079 | 0.00 | $ 0.00 |
| Jul 15, 2025 | PARSHALL B LYNNE | Option Excercise | 4079 | 0.00 | $ 0.00 |
| Jul 15, 2025 | HERMAN JOAN E | Option Excercise | 4079 | 0.00 | $ 0.00 |
| Jul 15, 2025 | Hayden Michael R | Option Excercise | 4079 | 0.00 | $ 0.00 |
| Jul 15, 2025 | Diaz Allene M. | Option Excercise | 4079 | 0.00 | $ 0.00 |
| Jul 15, 2025 | BERTHELSEN SPENCER R | Option Excercise | 4079 | 0.00 | $ 0.00 |
| Jul 15, 2025 | LOSCALZO JOSEPH | Option Excercise | 4079 | 0.00 | $ 0.00 |
| Jul 11, 2025 | Monia Brett P | Open Market Sale | 1160 | 41.74 | $ 48,416.20 |
| May 1, 2025 | Hayden Michael R | Open Market Purchase | 15000 | 31.86 | $ 477,900.00 |
| Apr 16, 2025 | Birchler Brian | Open Market Sale | 680 | 28.37 | $ 19,291.60 |
| Apr 16, 2025 | Jenne Kyle | Open Market Sale | 3016 | 28.36 | $ 85,533.76 |
| Apr 16, 2025 | Baroldi Joseph | Open Market Sale | 3928 | 28.40 | $ 111,555.20 |
| Apr 15, 2025 | Birchler Brian | Option Excercise | 1875 | 0.00 | $ 0.00 |
| Apr 15, 2025 | Jenne Kyle | Option Excercise | 12226 | 0.00 | $ 0.00 |
| Apr 15, 2025 | Baroldi Joseph | Option Excercise | 10837 | 0.00 | $ 0.00 |
| Mar 11, 2025 | Monia Brett P | Open Market Sale | 140 | 32.32 | $ 4,524.80 |
| Feb 28, 2025 | Swayze Eric | Other Aquisition | 415 | 28.21 | $ 11,707.77 |
| Feb 28, 2025 | O'NEIL PATRICK R. | Other Aquisition | 554 | 28.21 | $ 15,629.17 |
| Feb 28, 2025 | Monia Brett P | Other Aquisition | 437 | 28.21 | $ 12,328.43 |
| Feb 28, 2025 | Geary Richard S | Other Aquisition | 415 | 28.21 | $ 11,707.77 |
| Feb 28, 2025 | Birchler Brian | Other Aquisition | 414 | 28.21 | $ 11,679.56 |
| Feb 28, 2025 | BENNETT C FRANK | Other Aquisition | 320 | 28.21 | $ 9,027.68 |
| Feb 20, 2025 | O'NEIL PATRICK R. | Open Market Sale | 1207 | 32.35 | $ 39,046.45 |
| Feb 4, 2025 | O'NEIL PATRICK R. | Open Market Sale | 6165 | 31.62 | $ 194,939.15 |
| Feb 4, 2025 | Monia Brett P | Open Market Sale | 38843 | 31.65 | $ 1,229,462.52 |
| Jan 31, 2025 | Monia Brett P | Open Market Sale | 13242 | 32.45 | $ 429,655.23 |
| Jan 31, 2025 | HOUGEN ELIZABETH L | Open Market Sale | 1523 | 32.44 | $ 49,403.68 |
| Jan 31, 2025 | Geary Richard S | Open Market Sale | 1406 | 32.40 | $ 45,561.29 |
| Jan 31, 2025 | BENNETT C FRANK | Open Market Sale | 1327 | 32.46 | $ 43,079.20 |
| Jan 31, 2025 | Swayze Eric | Open Market Sale | 1367 | 32.31 | $ 44,162.03 |
| Jan 31, 2025 | Schneider Eugene | Open Market Sale | 1484 | 32.20 | $ 47,779.90 |
| Jan 31, 2025 | O'NEIL PATRICK R. | Open Market Sale | 1406 | 32.49 | $ 45,684.60 |
| Jan 30, 2025 | Swayze Eric | Grant | 3714 | 0.00 | $ 0.00 |
| Jan 30, 2025 | Schneider Eugene | Grant | 4032 | 0.00 | $ 0.00 |
| Jan 30, 2025 | O'NEIL PATRICK R. | Grant | 3820 | 0.00 | $ 0.00 |
| Jan 30, 2025 | Monia Brett P | Grant | 25372 | 0.00 | $ 0.00 |
| Jan 30, 2025 | HOUGEN ELIZABETH L | Grant | 4138 | 0.00 | $ 0.00 |
| Jan 30, 2025 | Geary Richard S | Grant | 3820 | 0.00 | $ 0.00 |
| Jan 30, 2025 | BENNETT C FRANK | Grant | 3607 | 0.00 | $ 0.00 |
| Jan 16, 2025 | Swayze Eric | Open Market Sale | 7176 | 32.84 | $ 235,678.22 |
| Jan 16, 2025 | Schneider Eugene | Open Market Sale | 6523 | 32.79 | $ 213,889.17 |
| Jan 16, 2025 | O'NEIL PATRICK R. | Open Market Sale | 7360 | 32.83 | $ 241,628.80 |
| Jan 16, 2025 | Monia Brett P | Open Market Sale | 33445 | 32.63 | $ 1,091,444.13 |
| Jan 16, 2025 | HOUGEN ELIZABETH L | Open Market Sale | 8870 | 32.81 | $ 290,989.22 |
| Jan 16, 2025 | Geary Richard S | Open Market Sale | 7072 | 32.86 | $ 232,407.14 |
| Jan 16, 2025 | Devers Shannon L. | Open Market Sale | 4267 | 32.78 | $ 139,855.19 |
| Jan 16, 2025 | Birchler Brian | Open Market Sale | 5400 | 32.70 | $ 176,580.00 |
| Jan 16, 2025 | BENNETT C FRANK | Open Market Sale | 6752 | 32.90 | $ 222,113.79 |
| Jan 16, 2025 | Baroldi Joseph | Open Market Sale | 4430 | 32.70 | $ 144,861.00 |
| Jan 15, 2025 | YANG MICHAEL J. | Option Excercise | 1931 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Swayze Eric | Option Excercise | 19160 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Schneider Eugene | Option Excercise | 17372 | 0.00 | $ 0.00 |
| Jan 15, 2025 | O'NEIL PATRICK R. | Option Excercise | 19690 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Monia Brett P | Option Excercise | 73448 | 0.00 | $ 0.00 |
| Jan 15, 2025 | HOUGEN ELIZABETH L | Option Excercise | 23887 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Geary Richard S | Option Excercise | 18901 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Devers Shannon L. | Option Excercise | 12295 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Birchler Brian | Option Excercise | 14283 | 0.00 | $ 0.00 |
| Jan 15, 2025 | BENNETT C FRANK | Option Excercise | 18011 | 0.00 | $ 0.00 |
| Jan 15, 2025 | Baroldi Joseph | Option Excercise | 11247 | 0.00 | $ 0.00 |
| Dec 23, 2024 | Hayden Michael R | Open Market Purchase | 5000 | 36.22 | $ 181,078.75 |
| Nov 12, 2024 | Swayze Eric | Open Market Sale | 1194 | 37.92 | $ 45,277.67 |
| Nov 12, 2024 | Monia Brett P | Open Market Sale | 6630 | 38.05 | $ 252,294.04 |
| Nov 12, 2024 | LOSCALZO JOSEPH | Open Market Sale | 13508 | 37.86 | $ 511,426.39 |