Ionis Pharmaceuticals (IONS) Insider Trading & Ownership

$74.12 -0.19 (-0.26%)

Closing price 04:00 PM Eastern

Extended Trading

$74.12 0.00 (0.00%)

As of 05:58 PM Eastern

Compare

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): $151.77M

Get IONS Insider Trade Alerts

Want to know when executives and insiders are buying or selling Ionis Pharmaceuticals stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily.

Subscribe Now

SMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy.

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
6/15/2026	Spencer R Berthelsen Director	Sell	8,000	$73.49	$587,920.00
6/12/2026	Holly B Kordasiewicz EVP	Sell	60,846	$73.41	$4,466,704.86
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
Get Insider Trades Delivered To Your Inbox Enter your email address below to receive a concise daily summary of insider buying activity, insider selling activity and changes in hedge fund holdings.
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
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
A letter from Shannon Stansberry (Ad) Porter Stansberry nearly canceled the entire project. When he first saw the claimed returns - only one down year in nearly two decades and total gains of almost 2,000% - his immediate reaction was disbelief. It took a trusted friend's personal vouching for Emmet Savage and a face-to-face trip to Ireland to change his mind. The full documentary, Investigating Project Prophet, is now live. Watch the full story and see the verified track record for yourself
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
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
SpaceX will crumble without these 5 companies (Ad) The SpaceX IPO is drawing near, but the real opportunity may lie in 5 lesser-known companies providing the critical infrastructure SpaceX depends on to operate. Goldman Sachs and Morgan Stanley are reportedly already building positions in one of these names. Another is a resource miner that Elon Musk's broader empire - including Tesla - relies on. Lance Ippolito has detailed all five inside his free SpaceX Investing Blackbook. Download the free SpaceX Investing Blackbook before these names go mainstream
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

(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 ($4,780,012.92), 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 ($1,193,280.00).

Insiders have sold a total of 2,262,766 Ionis Pharmaceuticals shares in the last 24 months for a total of $156,434,041.75 sold.

Ionis Pharmaceuticals Active Insiders

More Insider Trading Tools from MarketBeat

Related Companies

Insider Tracking Tools

Insider Trading By Country

Latest Articles

This page (NASDAQ:IONS) was last updated on 6/18/2026 by MarketBeat.com Staff.

From Our Partners

Get 30 Days of MarketBeat All Access for Free

Start Your 30-Day Trial

In-depth profiles and analysis for 20,000 public companies.
Real-time analyst ratings, insider transactions, earnings data, and more.
Our daily ratings and market update email newsletter.

Sign In
Create Account

Your Email Address:

Your Password:

Forgot your password?

Your Email Address:

Choose a Password:

By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

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

More Insider Trading Tools from MarketBeat

Best-in-Class Portfolio Monitoring

Stock Ideas and Recommendations

Advanced Stock Screeners and Research Tools

About MarketBeat

MarketBeat Products

Popular Tools

Financial Calendars

Terms & Info

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

More Insider Trading Tools from MarketBeat

MarketBeat All Access Features

Best-in-Class Portfolio Monitoring

Stock Ideas and Recommendations

Advanced Stock Screeners and Research Tools