Key facts
- This page summarizes Michael J. Yang's Form 4 filing for IONIS PHARMACEUTICALS INC (IONS).
- 2 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 20 Jan 2026, 20:21.
Michael J. Yang - 15 Jan 2026 Form 4 Insider Report for IONIS PHARMACEUTICALS INC (IONS)
- Reporting relationship
- Director
- Issuer ticker
- IONS
- Reported as of
- 15 Jan 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 20 Jan 2026, 20:21:43 UTC
- Prior SEC filing
- 17 Jul 2025
- Next SEC filing
- 12 Jun 2026
- Source filing
- View source filing
- Reporting owner signature
- By: Patrick R. O'Neil, attorney-in-fact For: Michael J. Yang
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Michael J. Yang filed Form 4 for IONIS PHARMACEUTICALS INC (IONS) on 20 Jan 2026.
Change
- Previous filing in this sequence was filed on 17 Jul 2025.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001702283
Primary reporting owner
YANG MICHAEL J.
- Relationship
- Director
- Address
- 2855 GAZELLE COURT, CARLSBAD
- Signature
- By: Patrick R. O'Neil, attorney-in-fact For: Michael J. Yang
- Signature date
- 20 Jan 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
IONS
transaction
Common Stock
Options Exercise
- Transaction value
- $0
- Shares
- +1,930
- Change %
- +32%
- Price
- $0.000000
- Shares after
- 7,940
- Date
- 15 Jan 2026
- Ownership
- Direct
- Footnotes
- F1
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
IONS
transaction
Derivative
Restricted Stock Unit
Options Exercise
- Transaction value
- $0
- Shares
- -1,930
- Change %
- -21%
- Price
- $0.000000
- Shares after
- 7,150
- Date
- 15 Jan 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 1,930
- Exercise price
- $0.000000
- Footnotes
- F2, F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 3 footnotes
Footnote F1
Acquired pursuant to vesting and release of shares in accordance with a Restricted Stock Unit award.
Footnote F2
Each Restricted Stock Unit represents a contingent right to receive one share of Ionis common stock, or its equivalent cash value.
Footnote F3
Restricted Stock Units vest in three equal annual installments. Upon vesting, the restricted stock units will be paid out in whole shares of Ionis common stock or cash as may be determined by the Company.