IONIS PHARMACEUTICALS INC

IONS

Form 4 • Statement of Changes in Beneficial Ownership

SEC Accession Number: 0000874015-26-000134
Filing date: Mar 5, 2026
Earliest execution date: Mar 3, 2026

Summary

Type

Sell

Net shares

-85,089

% of shares

-51.37%

Amount (USD)

$6,741,669

Insider confidence score

8.1 out of 100

Positive

  • Under Rule 10b5-1 trading plan

Negative

  • Extreme scheduled sell (≥25% of shares)
  • Huge sell amount ($5M+)

Stock transactions

Transaction 1

Security

Common Stock

Action

Exercise

Date

2026-03-03

Code

M

Net shares

+16,463.0

Price per Share

$32.60

Amount (USD)

$536,693.80

Acquired/Disposed

Acquired

Shares Owned Before

100,554.0

Shares Owned After

117,017.0

Transaction 2

Security

Common Stock

Action

Exercise

Date

2026-03-03

Code

M

Net shares

+48,626.0

Price per Share

$60.89

Amount (USD)

$2,960,837.14

Acquired/Disposed

Acquired

Shares Owned Before

117,017.0

Shares Owned After

165,643.0

Transaction 3

Security

Common Stock

Action

Sell

Date

2026-03-03

Code

S

Net shares

-71,600.0

Price per Share

$79.10

Amount (USD)

$5,663,488.40

Acquired/Disposed

Disposed

Shares Owned Before

165,643.0

Shares Owned After

94,043.0

Transaction 4

Security

Common Stock

Action

Sell

Date

2026-03-03

Code

S

Net shares

-12,687.0

Price per Share

$79.88

Amount (USD)

$1,013,409.65

Acquired/Disposed

Disposed

Shares Owned Before

94,043.0

Shares Owned After

81,356.0

Transaction 5

Security

Common Stock

Action

Sell

Date

2026-03-03

Code

S

Net shares

-802.0

Price per Share

$80.76

Amount (USD)

$64,771.12

Acquired/Disposed

Disposed

Shares Owned Before

81,356.0

Shares Owned After

80,554.0

Derivative Transactions

Transaction 1

Security

Non-Qualified Stock Option (right to buy)

Action

Exercise

Date

2026-03-03

Code

M

Net shares

-16,463.0

Acquired/Disposed

Disposed

Shares Owned Before

18,869.0

Shares Owned After

2,406.0

Transaction 2

Security

Non-Qualified Stock Option (right to buy)

Action

Exercise

Date

2026-03-03

Code

M

Net shares

-48,626.0

Acquired/Disposed

Disposed

Shares Owned Before

48,626.0

Shares Owned After

0.0

Filing's footnotes

1. Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on November 19, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $78.60 to $79.60 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) on this Form 4.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.605 to $80.555 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (3) on this Form 4.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.61 to $81.07 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (4) on this Form 4.

ℹ️ Filed under Rule 10b5-1 trading plan

This page is for informational purposes only. While we strive for accuracy, the summary may contain inaccuracies or omissions. Please refer to the official SEC filing for authoritative information. Open the SEC filing.