Nektar Therapeutics (NASDAQ: NKTR) insider plans 418-share sale

Rhea-AI Filing Summary

NEKTAR THERAPEUTICS (NKTR) is named as the issuer in a notice that Howard Robin intends to sell common stock under Rule 144. The notice covers a planned sale of 418 shares of common stock held at Fidelity Brokerage Services LLC, with a stated market value of $30,086.93 as of August 18, 2026, on the NASDAQ market.

The shares to be sold arise from restricted stock vesting on August 14, 2026, identified as compensation from the issuer. The filing also lists prior sales of NKTR common stock by Howard Robin over the past three months, with the filer noting that the sale includes an amount to cover tax obligations from a vested equity award distribution.

Key Figures

Planned shares to be sold: 418 shares Market value of planned sale: $30,086.93 Maturity or end date reference: 08/18/2026 +5 more

8 metrics

Planned shares to be sold 418 shares Common stock to be sold under Rule 144 linked to restricted stock vesting

Market value of planned sale $30,086.93 Value of 418 NKTR shares as of 08/18/2026

Maturity or end date reference 08/18/2026 Date tied to the common stock position listed with Fidelity Brokerage Services LLC

Shares sold on 05/19/2026 444 shares Common stock sold by Howard Robin during the past three months

Proceeds from 05/19/2026 sale $29,084.53 Value of 444 NKTR shares sold on 05/19/2026

Shares sold on 06/16/2026 10,000 shares Common stock sale by Howard Robin listed in past three months section

Proceeds from 06/16/2026 sale $603,137.31 Value of 10,000 NKTR shares sold on 06/16/2026

Proceeds from 06/17/2026 sale $611,876.07 Value of 10,000 NKTR shares sold on 06/17/2026

Key Terms

Rule 144, Restricted Stock Vesting, attorney-in-fact

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vesting financial

"Common | 08/14/2026 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

attorney-in-fact regulatory

"as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Howard Robin."

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What insider sale of NKTR stock is indicated in this Form 144 notice?

The notice indicates an intended sale of 418 shares of NEKTAR THERAPEUTICS (NKTR) common stock. These shares, valued at $30,086.93 as of August 18, 2026, are associated with restricted stock vesting treated as compensation.

How are the 418 NKTR shares in this filing being acquired before sale?

The 418 shares of NKTR common stock referenced are tied to restricted stock vesting dated August 14, 2026. The filing identifies the issuer, NEKTAR THERAPEUTICS, as the source, and characterizes the vesting transaction as compensation.

What NKTR share sales has Howard Robin made in the past three months?

Over the past three months, Howard Robin sold 444 shares on May 19, 2026, and 10,000 shares on both June 16 and June 17, 2026. Reported total proceeds for these three transactions were $29,084.53, $603,137.31, and $611,876.07, respectively.

What reason is given for part of the NKTR share sale in this notice?

The filer states that the sale includes an amount necessary to cover a tax obligation related to settlement of a vested equity award distribution. This links part of the intended NKTR share sale to tax liabilities from equity compensation.

Which brokerage and market are involved in the reported NKTR share position?

The common stock position associated with the intended sale is held at Fidelity Brokerage Services LLC. The filing identifies the trading market as NASDAQ, where NEKTAR THERAPEUTICS (NKTR) common stock is to be sold under Rule 144.

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

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Available on EDGAR 08/18/2026 - 03:43 PM Accepted by SEC EDGAR 08/18/2026 - 03:42 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	0001206869
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	NEKTAR THERAPEUTICS
SEC File Number	000-24006
Address of Issuer	455 MISSION BAY BOULEVARD SOUTH SAN FRANCISCO CALIFORNIA 94158
Phone	4154825300
Name of Person for Whose Account the Securities are To Be Sold	ROBIN HOWARD W
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
Relationship to Issuer	Director

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	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	418	30086.93	34142994	08/18/2026	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	08/14/2026	Restricted Stock Vesting	Issuer			418	08/14/2026	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Howard Robin 455 MISSION BAY BOULEVARD SOUTH SAN FRANCISCO CA 94158	Common	05/19/2026	444	29084.53
Howard Robin 455 MISSION BAY BOULEVARD SOUTH SAN FRANCISCO CA 94158	Common	06/16/2026	10000	603137.31
Howard Robin 455 MISSION BAY BOULEVARD SOUTH SAN FRANCISCO CA 94158	Common	06/17/2026	10000	611876.07

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	08/18/2026
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/ Jessica Spraker, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Howard Robin.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)