IONS files Form 144 for proposed Common Stock resale

IONS submitted a Form 144 notifying a proposed sale of Common Stock.

Rhea-AI Filing Summary

IONS submitted a Form 144 notifying a proposed sale of Common Stock. The notice lists equity compensation option-exercise lots of 28,951, 19,895, and 12,000 shares and shows a filing/notice date of 06/12/2026 on Nasdaq.

Insights

Corporate Counsel

Form 144 is a notice of proposed sale under Rule 144; it does not itself consummate a sale.

Form 144s report proposed resale by an affiliate or control person under securities resale rules. The filing lists specific option-exercise share lots: 28,951, 19,895, and 12,000, and is dated 06/12/2026.

Timing and execution details are not shown; subsequent broker reports or Form 4/Form 5 filings would confirm actual transactions. Cash‑flow treatment and proceeds recipient are not stated in the excerpt.

Key Figures

Notice date: 06/12/2026 Option-exercise lot: 28,951 shares Option-exercise lot: 19,895 shares +3 more

6 metrics

Notice date 06/12/2026 Form 144 filing/notice date

Option-exercise lot 28,951 shares Equity compensation option exercise dated 01/02/2020

Option-exercise lot 19,895 shares Equity compensation option exercise dated 01/04/2021

Option-exercise lot 12,000 shares Equity compensation option exercise dated 01/03/2022

Numeric code shown 4,466,425.00 Numeric field appearing near header (as provided in excerpt)

Aggregate number shown 165,262,556 Numeric field appearing near header (as provided in excerpt)

Key Terms

Form 144, Option Exercise, Equity Compensation

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Option Exercise financial

"Equity Compensation Common Stock | 01/02/2020 | Option Exercise"

Equity Compensation financial

"Equity Compensation Common Stock | 01/04/2021"

Equity compensation is pay given to employees, executives or contractors in the form of company ownership—such as stock, stock options or restricted shares—rather than just cash. It matters to investors because it can align workers' incentives with shareholders (like paying someone in slices of the same pie they help grow), but it also increases the number of shares outstanding and company expenses, affecting ownership percentages and earnings per share.

FAQ

What does IONS Form 144 filing mean for shareholders?

It notifies a proposed resale of Common Stock by an affiliate or insider. The filing lists option-exercise lots of 28,951, 19,895, and 12,000 shares dated 06/12/2026. It does not prove the shares have been sold.

Does the Form 144 show that IONS shares were sold on 06/12/2026?

No; Form 144 is a notice of proposed sale, not proof of execution. It shows the proposed resale notice dated 06/12/2026 and lists specific share lots, but consummation would appear in trading records or subsequent SEC filings.

Which securities are listed in the IONS Form 144?

The filing lists Common Stock from equity compensation option exercises: 28,951, 19,895, and 12,000 shares. The document references Nasdaq and the notice date 06/12/2026.

Will Form 144 tell who receives sale proceeds for IONS?

No; the excerpt does not specify proceeds recipient. Form 144 typically notifies the SEC of proposed resales; details on proceeds recipients or cash flow are not included in the provided excerpt.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/12/2026 - 04:29 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002102721
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	IONIS PHARMACEUTICALS INC
SEC File Number	000-19125
Address of Issuer	2855 GAZELLE COURT CARLSBAD CALIFORNIA 92010
Phone	7609319200
Name of Person for Whose Account the Securities are To Be Sold	Kordasiewicz Holly B.
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Stifel Nicolaus & Company Inc 501 N Broadway St. Louis MO 63102	60846	4466425.00	165262556	06/12/2026	Nasdaq

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	01/02/2020	Option Exercise	Issuer			28951	06/12/2026	Equity Compensation
Common Stock	01/04/2021	Option Exercise	Issuer			19895	06/12/2026	Equity Compensation
Common Stock	01/03/2022	Option Exercise	Issuer			12000	06/12/2026	Equity Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	06/12/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/13/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ James Weimer, as a duly authorized representative of STIFEL, as attorney-in-fact for Holly Kordasiewicz
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)