Ionis Pharmaceuticals (IONS) Insider Trading & Ownership

$73.82 +0.50 (+0.68%)

Closing price 04:00 PM Eastern

Extended Trading

$75.16 +1.34 (+1.81%)

As of 07:53 PM Eastern

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Current Insider Ownership Percentage: 1.81%
Number Of Insiders Buying (Last 12 Months): 0
Number Of Insiders Selling (Last 12 Months): 15
Amount Of Insider Selling (Last 12 Months): $146.72M

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IONS Insider Buying and Selling by Quarter

Ionis Pharmaceuticals Insider and Congressional Trades History

Transaction Type

Time Frame

Start Date

End Date

Export

Transaction Date	Insider	Buy/Sell	Number of Shares	Average Share Price	Total Transaction
6/1/2026	Spencer R Berthelsen Director	Sell	8,000	$75.67	$605,360.00
4/16/2026	Brian Birchler EVP	Sell	973	$75.04	$73,013.92
4/16/2026	Kyle Jenne EVP	Sell	4,902	$75.17	$368,483.34
4/15/2026	B Lynne Parshall Director	Sell	5,000	$76.27	$381,350.00
4/2/2026	Shannon L Devers EVP	Sell	6,193	$74.05	$458,591.65
3/19/2026	Eugene Schneider EVP	Sell	5,812	$70.97	$412,477.64
3/17/2026	Elizabeth L Hougen EVP	Sell	10,172	$73.21	$744,692.12
3/16/2026	Elizabeth L Hougen EVP	Sell	215,048	$72.40	$15,569,475.20
3/10/2026	Brett P Monia CEO	Sell	34,103	$75.92	$2,589,099.76
3/10/2026	Kyle Jenne EVP	Sell	37,277	$75.85	$2,827,460.45
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3/9/2026	Brett P Monia CEO	Sell	126,670	$75.20	$9,525,584.00
3/9/2026	Patrick R O'neil EVP	Sell	10,148	$75.25	$763,637.00
3/3/2026	Allene M Diaz Director	Sell	54,878	$79.35	$4,354,569.30
3/3/2026	C Frank Bennett EVP	Sell	85,089	$79.23	$6,741,601.47
3/3/2026	Shannon L Devers EVP	Sell	20,106	$79.40	$1,596,416.40
2/13/2026	Eric Swayze EVP	Sell	15,642	$81.76	$1,278,889.92
2/11/2026	B Lynne Parshall Director	Sell	5,000	$82.72	$413,600.00
2/6/2026	Brett P Monia CEO	Sell	29,430	$85.79	$2,524,799.70
2/2/2026	C Frank Bennett EVP	Sell	85,089	$82.93	$7,056,430.77
1/30/2026	Brett P Monia CEO	Sell	62,970	$82.72	$5,208,878.40
1/30/2026	Brian Birchler EVP	Sell	6,179	$83.03	$513,042.37
1/30/2026	C Frank Bennett EVP	Sell	5,885	$82.95	$488,160.75
1/30/2026	C Frank Bennett EVP	Sell	5,885	$82.95	$488,160.75
1/30/2026	Elizabeth L Hougen EVP	Sell	6,988	$83.24	$581,681.12
1/30/2026	Eric Swayze EVP	Sell	6,179	$82.93	$512,424.47
1/30/2026	Eugene Schneider EVP	Sell	6,179	$83.45	$515,637.55
1/30/2026	Patrick R O'neil EVP	Sell	6,179	$83.53	$516,131.87
1/30/2026	Patrick R O'neil EVP	Sell	6,179	$83.53	$516,131.87
1/22/2026	Shannon L Devers EVP	Sell	3,977	$81.34	$323,489.18
1/16/2026	Brett P Monia CEO	Sell	44,034	$74.82	$3,294,623.88
1/16/2026	Brian Birchler EVP	Sell	8,480	$75.11	$636,932.80
1/16/2026	C Frank Bennett EVP	Sell	8,977	$75.15	$674,621.55
1/16/2026	Elizabeth L Hougen EVP	Sell	12,922	$75.22	$971,992.84
1/16/2026	Eric Swayze EVP	Sell	9,884	$75.34	$744,660.56
1/16/2026	Eric Swayze EVP	Sell	49	$75.97	$3,722.53
1/16/2026	Eugene Schneider EVP	Sell	9,302	$75.59	$703,138.18
1/16/2026	Holly B Kordasiewicz EVP	Sell	4,141	$75.66	$313,308.06
1/16/2026	Kyle Jenne EVP	Sell	1,823	$75.96	$138,475.08
1/16/2026	Patrick R O'neil EVP	Sell	9,191	$75.84	$697,045.44
1/16/2026	Shannon L Devers EVP	Sell	8,353	$75.95	$634,410.35
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1/7/2026	Shannon L Devers EVP	Sell	44,199	$85.08	$3,760,450.92
1/2/2026	Eric Swayze EVP	Sell	23,463	$79.12	$1,856,392.56
12/1/2025	Joseph H Wender Director	Sell	28,000	$80.82	$2,262,960.00
11/25/2025	Shannon L Devers EVP	Sell	16,777	$80.91	$1,357,427.07
11/6/2025	Brian Birchler EVP	Sell	8,000	$76.17	$609,360.00
11/6/2025	Richard S Geary EVP	Sell	33,038	$75.72	$2,501,637.36
11/5/2025	Richard S Geary EVP	Sell	1,601	$75.01	$120,091.01
11/3/2025	Richard S Geary EVP	Sell	1,680	$75.05	$126,084.00
10/31/2025	Joseph H Wender Director	Sell	11,200	$75.16	$841,792.00
10/31/2025	Richard S Geary EVP	Sell	89,249	$75.11	$6,703,492.39
10/30/2025	Joseph H Wender Director	Sell	16,800	$73.26	$1,230,768.00
10/16/2025	Eric Swayze EVP	Sell	53	$73.62	$3,901.86
10/16/2025	Shannon L Devers EVP	Sell	1,263	$73.62	$92,982.06
10/15/2025	B Lynne Parshall Director	Sell	5,000	$71.74	$358,700.00
10/15/2025	Brian Birchler EVP	Sell	12,425	$72.23	$897,457.75
10/15/2025	Shannon L Devers EVP	Sell	6,000	$72.94	$437,640.00
10/14/2025	Brian Birchler EVP	Sell	11,475	$72.03	$826,544.25
10/6/2025	Brett P Monia CEO	Sell	437	$69.26	$30,266.62
10/6/2025	Eric Swayze EVP	Sell	6,849	$69.02	$472,717.98
10/6/2025	Patrick R O'neil EVP	Sell	13,441	$69.74	$937,375.34
10/2/2025	Eric Swayze EVP	Sell	12,972	$66.23	$859,135.56
10/2/2025	Patrick R O'neil EVP	Sell	64,664	$67.69	$4,377,106.16
10/1/2025	Eric Swayze EVP	Sell	14,142	$66.09	$934,644.78
10/1/2025	Joseph H Wender Director	Sell	16,800	$65.50	$1,100,400.00
9/30/2025	Elizabeth L Hougen EVP	Sell	49,800	$65.26	$3,249,948.00
9/30/2025	Patrick R O'neil EVP	Sell	14,827	$64.68	$959,010.36
9/30/2025	Richard S Geary EVP	Sell	57,900	$65.24	$3,777,396.00
9/29/2025	Patrick R O'neil EVP	Sell	10,473	$64.54	$675,927.42
9/12/2025	Patrick R O'neil EVP	Sell	1,700	$64.58	$109,786.00
9/9/2025	Patrick R O'neil EVP	Sell	21,000	$64.56	$1,355,760.00
9/5/2025	C Frank Bennett EVP	Sell	6,000	$59.60	$357,600.00
9/3/2025	Brett P Monia CEO	Sell	203,814	$60.32	$12,294,060.48
9/3/2025	C Frank Bennett EVP	Sell	33,909	$60.62	$2,055,563.58
9/3/2025	Eugene Schneider EVP	Sell	19,658	$60.81	$1,195,402.98
9/3/2025	Joseph H Wender Director	Sell	11,200	$60.14	$673,568.00
9/3/2025	Patrick R O'neil EVP	Sell	76,850	$60.97	$4,685,544.50
9/3/2025	Shannon L Devers EVP	Sell	3,162	$61.02	$192,945.24
9/2/2025	B Lynne Parshall Director	Sell	20,000	$50.91	$1,018,200.00
9/2/2025	C Frank Bennett EVP	Sell	5,000	$49.14	$245,700.00
9/2/2025	Eric Swayze EVP	Sell	11,130	$49.67	$552,827.10
9/2/2025	Joseph H Wender Director	Sell	16,800	$55.87	$938,616.00
9/2/2025	Patrick R O'neil EVP	Sell	13,050	$54.51	$711,355.50
9/2/2025	Richard S Geary EVP	Sell	10,000	$50.37	$503,700.00
8/22/2025	Allene M Diaz Director	Sell	1,427	$42.53	$60,690.31
8/18/2025	C Frank Bennett EVP	Sell	10,000	$43.98	$439,800.00
8/6/2025	B Lynne Parshall Director	Sell	5,000	$41.93	$209,650.00
8/5/2025	Richard S Geary EVP	Sell	10,000	$42.86	$428,600.00
8/4/2025	Eugene Schneider EVP	Sell	9,549	$42.80	$408,697.20
7/30/2025	Brett P Monia CEO	Sell	2,432	$45.00	$109,440.00
7/11/2025	Brett P Monia CEO	Sell	1,160	$41.74	$48,418.40
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(Data available from 1/1/2013 forward)

IONS Insider Trading Activity - Frequently Asked Questions

The list of insiders at Ionis Pharmaceuticals includes Allene M Diaz, B Lynne Parshall, Brett P Monia, Brian Birchler, C Frank Bennett, Elizabeth L Hougen, Eric Swayze, Eugene Schneider, Holly B Kordasiewicz, Joseph Baroldi, Joseph H Wender, Joseph Klein III, Kyle Jenne, Michael R Hayden, Onaiza Cadoret-Manier, Patrick R O'neil, Richard S Geary, Shannon L Devers, and Spencer R Berthelsen. Learn more on insiders at IONS.

1.81% of Ionis Pharmaceuticals stock is owned by insiders. Learn more on IONS's insider holdings.

The following insider purchased IONS shares in the last 24 months: Michael R Hayden ($659,000.00).

Insiders have purchased a total of 20,000 IONS shares in the last 24 months for a total of $659,000.00 bought.

The following insiders have sold IONS shares in the last 24 months: Allene M Diaz ($4,415,259.61), B Lynne Parshall ($2,381,500.00), Brett P Monia ($38,632,361.74), Brian Birchler ($3,575,642.69), C Frank Bennett ($18,547,638.87), Elizabeth L Hougen ($21,458,220.10), Eric Swayze ($7,545,729.36), Eugene Schneider ($3,235,353.55), Holly B Kordasiewicz ($313,308.06), Joseph H Wender ($7,048,104.00), Joseph Klein III ($600,000.00), Kyle Jenne ($3,334,418.87), Patrick R O'neil ($16,538,795.21), Richard S Geary ($14,293,371.96), Shannon L Devers ($8,854,352.87), and Spencer R Berthelsen ($605,360.00).

Insiders have sold a total of 2,193,920 Ionis Pharmaceuticals shares in the last 24 months for a total of $151,379,416.89 sold.

Ionis Pharmaceuticals Active Insiders

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This page (NASDAQ:IONS) was last updated on 6/11/2026 by MarketBeat.com Staff.

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Ionis Pharmaceuticals (IONS) Insider Trading & Ownership

IONS Insider Buying and Selling by Quarter

Ionis Pharmaceuticals Insider and Congressional Trades History

IONS Insider Trading Activity - Frequently Asked Questions

Ionis Pharmaceuticals Active Insiders

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Ionis Pharmaceuticals (IONS) Insider Trading & Ownership

Ionis Pharmaceuticals (NASDAQ:IONS) Insider Buying and Selling Activity

IONS Insider Buying and Selling by Quarter

Ionis Pharmaceuticals Insider and Congressional Trades History

IONS Insider Trading Activity - Frequently Asked Questions

Who is on Ionis Pharmaceuticals' Insider Roster?

What percentage of Ionis Pharmaceuticals stock is owned by insiders?

Which Ionis Pharmaceuticals insiders have been buying company stock?

How much insider buying is happening at Ionis Pharmaceuticals?

Which Ionis Pharmaceuticals insiders have been selling company stock?

How much insider selling is happening at Ionis Pharmaceuticals?

Ionis Pharmaceuticals Active Insiders

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