InsiderFlow

IONS

Ionis Pharmaceuticals, Inc.$73.12-0.73 (-0.99%)
Prev Close$73.82·MCap$12.15B·P/E·Vol1.46M·Yield

Buys (12M)

0

$0.00

Sells (12M)

104

$169.98M

Net Activity

Net Seller

$169.98M

Active Insiders

19

last 12 mo

Over the past 12 months, insider activity at Ionis Pharmaceuticals, Inc. (IONS) has been exclusively selling, with 0 insider purchases totaling $0.00 and 104 insider sales totaling $169.98M. The most recent insider transaction was by BERTHELSEN SPENCER R (director), who sold $605.4K worth of shares on Jun 3, 2026. Ionis Pharmaceuticals, Inc. operates in the Healthcare sector, within the Biotechnology industry, with a market cap of $12.15B.

IONS Insider Trading Activity

DateInsiderTypeValue
Jun 3, 2026 BERTHELSEN SPENCER RSell$605.4K
May 15, 2026 Monia Brett PSell$356.0K
May 6, 2026 LOSCALZO JOSEPHSell$5.80M
May 5, 2026 KLEIN JOSEPH IIISell$743.2K
Apr 30, 2026 Baroldi JosephSell$116.7K
Apr 17, 2026 PARSHALL B LYNNESell$381.4K
Apr 17, 2026 Jenne KyleSell$368.5K
Apr 17, 2026 Baroldi JosephSell$419.0K
Apr 17, 2026 Birchler BrianSell$73.0K
Apr 2, 2026 Devers Shannon L.Sell$458.6K
Apr 2, 2026 KLEIN JOSEPH IIISell$1.69M
Mar 23, 2026 Schneider EugeneSell$412.5K
Mar 18, 2026 HOUGEN ELIZABETH LSell$16.31M
Mar 5, 2026 Baroldi JosephSell$511.9K
Mar 5, 2026 BENNETT C FRANKSell$6.74M
Mar 5, 2026 Devers Shannon L.Sell$1.60M
Mar 5, 2026 Diaz Allene M.Sell$4.35M
Mar 5, 2026 KLEIN JOSEPH IIISell$1.70M
Mar 5, 2026 LOSCALZO JOSEPHSell$82.8K
Feb 13, 2026 PARSHALL B LYNNESell$413.6K
Feb 13, 2026 Swayze EricSell$2.56M
Feb 11, 2026 PARSHALL B LYNNESell$413.6K
Feb 10, 2026 Monia Brett PSell$2.52M
Feb 6, 2026 Monia Brett PSell$2.52M
Feb 4, 2026 BENNETT C FRANKSell$3.02M
Feb 2, 2026 Baroldi JosephSell$439.4K
Feb 2, 2026 BENNETT C FRANKSell$7.54M
Feb 2, 2026 Birchler BrianSell$513.0K
Feb 2, 2026 HOUGEN ELIZABETH LSell$581.7K
Feb 2, 2026 Monia Brett PSell$5.21M
Feb 2, 2026 O'NEIL PATRICK R.Sell$516.2K
Feb 2, 2026 Schneider EugeneSell$515.6K
Feb 2, 2026 Swayze EricSell$512.4K
Jan 29, 2026 Baroldi JosephSell$439.4K
Jan 29, 2026 BENNETT C FRANKSell$488.1K
Jan 29, 2026 Birchler BrianSell$513.0K
Jan 29, 2026 HOUGEN ELIZABETH LSell$581.7K
Jan 29, 2026 Monia Brett PSell$5.21M
Jan 29, 2026 O'NEIL PATRICK R.Sell$516.2K
Jan 29, 2026 Schneider EugeneSell$515.6K
Jan 29, 2026 Swayze EricSell$512.4K
Jan 23, 2026 Devers Shannon L.Sell$323.5K
Jan 22, 2026 Devers Shannon L.Sell$323.5K
Jan 15, 2026 Baroldi JosephSell$610.3K
Jan 15, 2026 BENNETT C FRANKSell$674.6K
Jan 15, 2026 Birchler BrianSell$636.9K
Jan 15, 2026 Devers Shannon L.Sell$634.4K
Jan 15, 2026 HOUGEN ELIZABETH LSell$972.0K
Jan 15, 2026 Jenne KyleSell$138.5K
Jan 15, 2026 Kordasiewicz Holly B.Sell$313.3K
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IONS Insider Buying Activity

The following table shows recent insider purchases of Ionis Pharmaceuticals, Inc. (IONS) stock reported via SEC Form 4 filings.

No insider buying activity found for IONS in the last 12 months.

IONS Insider Selling Activity

The following table shows recent insider sales of Ionis Pharmaceuticals, Inc. (IONS) stock reported via SEC Form 4 filings.

DateInsiderTypeValue
Jun 3, 2026 BERTHELSEN SPENCER RSell$605.4K
May 15, 2026 Monia Brett PSell$356.0K
May 6, 2026 LOSCALZO JOSEPHSell$5.80M
May 5, 2026 KLEIN JOSEPH IIISell$743.2K
Apr 30, 2026 Baroldi JosephSell$116.7K
Apr 17, 2026 PARSHALL B LYNNESell$381.4K
Apr 17, 2026 Jenne KyleSell$368.5K
Apr 17, 2026 Baroldi JosephSell$419.0K
Apr 17, 2026 Birchler BrianSell$73.0K
Apr 2, 2026 Devers Shannon L.Sell$458.6K
Apr 2, 2026 KLEIN JOSEPH IIISell$1.69M
Mar 23, 2026 Schneider EugeneSell$412.5K
Mar 18, 2026 HOUGEN ELIZABETH LSell$16.31M
Mar 5, 2026 Baroldi JosephSell$511.9K
Mar 5, 2026 BENNETT C FRANKSell$6.74M
Mar 5, 2026 Devers Shannon L.Sell$1.60M
Mar 5, 2026 Diaz Allene M.Sell$4.35M
Mar 5, 2026 KLEIN JOSEPH IIISell$1.70M
Mar 5, 2026 LOSCALZO JOSEPHSell$82.8K
Feb 13, 2026 PARSHALL B LYNNESell$413.6K
Feb 13, 2026 Swayze EricSell$2.56M
Feb 11, 2026 PARSHALL B LYNNESell$413.6K
Feb 10, 2026 Monia Brett PSell$2.52M
Feb 6, 2026 Monia Brett PSell$2.52M
Feb 4, 2026 BENNETT C FRANKSell$3.02M
Feb 2, 2026 Baroldi JosephSell$439.4K
Feb 2, 2026 BENNETT C FRANKSell$7.54M
Feb 2, 2026 Birchler BrianSell$513.0K
Feb 2, 2026 HOUGEN ELIZABETH LSell$581.7K
Feb 2, 2026 Monia Brett PSell$5.21M
Feb 2, 2026 O'NEIL PATRICK R.Sell$516.2K
Feb 2, 2026 Schneider EugeneSell$515.6K
Feb 2, 2026 Swayze EricSell$512.4K
Jan 29, 2026 Baroldi JosephSell$439.4K
Jan 29, 2026 BENNETT C FRANKSell$488.1K
Jan 29, 2026 Birchler BrianSell$513.0K
Jan 29, 2026 HOUGEN ELIZABETH LSell$581.7K
Jan 29, 2026 Monia Brett PSell$5.21M
Jan 29, 2026 O'NEIL PATRICK R.Sell$516.2K
Jan 29, 2026 Schneider EugeneSell$515.6K
Jan 29, 2026 Swayze EricSell$512.4K
Jan 23, 2026 Devers Shannon L.Sell$323.5K
Jan 22, 2026 Devers Shannon L.Sell$323.5K
Jan 15, 2026 Baroldi JosephSell$610.3K
Jan 15, 2026 BENNETT C FRANKSell$674.6K
Jan 15, 2026 Birchler BrianSell$636.9K
Jan 15, 2026 Devers Shannon L.Sell$634.4K
Jan 15, 2026 HOUGEN ELIZABETH LSell$972.0K
Jan 15, 2026 Jenne KyleSell$138.5K
Jan 15, 2026 Kordasiewicz Holly B.Sell$313.3K

IONS Insiders

BERTHELSEN SPENCER R

director

Sold $605.4K
1 tradesLast: Jun 3, 2026
Monia Brett P

director, officer: Chief Executive Officer

Sold $31.61M
11 tradesLast: May 15, 2026
LOSCALZO JOSEPH

Director

Sold $8.05M
4 tradesLast: May 6, 2026
KLEIN JOSEPH III

Director

Sold $6.13M
5 tradesLast: May 5, 2026
Baroldi Joseph

officer: EVP, Chief Business Officer

Sold $6.49M
12 tradesLast: Apr 30, 2026
Jenne Kyle

officer: EVP, Chf GL Pdt Str Ofcr

Sold $592.5K
3 tradesLast: Apr 17, 2026
PARSHALL B LYNNE

Director

Sold $2.80M
6 tradesLast: Apr 17, 2026
Birchler Brian

officer: EVP, Corp and Development Ops

Sold $4.09M
7 tradesLast: Apr 17, 2026
Devers Shannon L.

officer: EVP, Chief Human Resources Ofc

Sold $9.18M
9 tradesLast: Apr 2, 2026
Schneider Eugene

officer: EVP, Chf Clinical Develop Ofcr

Sold $3.75M
6 tradesLast: Mar 23, 2026
HOUGEN ELIZABETH L

officer: EVP, Finance & CFO

Sold $21.70M
5 tradesLast: Mar 18, 2026
Diaz Allene M.

Director

Sold $4.42M
2 tradesLast: Mar 5, 2026
BENNETT C FRANK

officer: EVP, Chief Scientific Officer

Sold $21.57M
8 tradesLast: Mar 5, 2026
Swayze Eric

officer: EVP Research

Sold $9.01M
9 tradesLast: Feb 13, 2026
O'NEIL PATRICK R.

officer: EVP CLO & General Counsel

Sold $15.58M
10 tradesLast: Feb 2, 2026
Kordasiewicz Holly B.

EVP, Chief Development Officer

Sold $313.3K
1 tradesLast: Jan 15, 2026
WENDER JOSEPH H

Director

Sold $7.05M
4 tradesLast: Dec 1, 2025
HERMAN JOAN E

Director

Sold $3.17M
1 tradesLast: Nov 19, 2025
Geary Richard S

EVP, Chief Development Officer

Sold $14.16M
5 tradesLast: Nov 5, 2025
Hayden Michael R

Director

Bought $477.9K
1 tradesLast: May 1, 2025