Nektar Therapeutics SEC Filings

Insider sales by Nektar Therapeutics CEO and Director Robin W. Howard are reported on Form 4. On 09/09/2025 Mr. Howard sold a series of common stock lots under a disclosed Rule 10b5-1 trading plan: 2,100 shares at a weighted average price of $45.16, 1,200 shares at $46.41, 2,156 shares at $47.49, and 1,210 shares at $48.18. The filings show his beneficial ownership declined through the sequence from 53,908 shares to 49,342 shares after the last reported sale; an indirect holding of 28 shares is listed as held by his spouse. The report was executed under an established trading plan and the filer states willingness to provide trade-level details on request.

Form 144 filed for NKTR (Nektar Therapeutics) reports a proposed sale of 6,666 common shares by an insider through Fidelity Brokerage Services on 09/09/2025 on NASDAQ, with an aggregate market value of $311,204.76. The filing lists total shares outstanding as 19,018,573. The shares to be sold match the sum of restricted stock vesting awards acquired between 05/15/2016 and 11/15/2021 that total 6,666 shares and were granted as compensation. The seller is identified as Howard Robin at the provided address. Recent dispositions by the same person in the prior three months total 14,905 shares for gross proceeds of $518,026.81 across four sales dated 08/19/2025 through 09/05/2025. The filing does not include the issuer name, CIK, or certain contact details in the provided text.

Jonathan Zalevsky, Chief R&D Officer of Nektar Therapeutics (NKTR), reported four sales of company common stock on 09/04/2025 under a Rule 10b5-1 trading plan. The transactions disposed of 1,721 shares in total (793; 432; 189; 307) at weighted average prices of $32.43, $33.60, $34.41, and $35.69 respectively, with execution price ranges disclosed for each lot. Following these sales, the reporting person beneficially owned 17,462 shares (direct ownership). The filing indicates the trades were executed pursuant to a pre-established plan and the filer offers to provide full trade-by-trade details on request.

Robin W. Howard, President & CEO and director of Nektar Therapeutics (NKTR), sold a total of 11,832 shares of common stock under a Rule 10b5-1 trading plan on September 4-5, 2025. The sales were reported in several block transactions with weighted-average prices reported at $32.37, $33.54, $34.40, $35.80, $37.87, $38.82 and $39.89. Following these dispositions the reporting person beneficially owned 56,008 shares directly; an additional 28 shares are held indirectly by the reporting person’s spouse. The filer states the transactions were effected pursuant to a 10b5-1 plan and provides price ranges for each grouped trade.

Nektar Therapeutics (NKTR) notice reports a proposed sale of 6,666 common shares with an aggregate market value of $256,837.92, representing a portion of ~19.02 million shares outstanding. The filing identifies the broker as Fidelity Brokerage Services LLC and lists the approximate date of sale as 09/05/2025 on NASDAQ. The 6,666 shares to be sold were acquired through restricted stock vesting between 05/15/2017 and 05/15/2021 as compensation from the issuer, and the acquisition table shows the same 6,666-share total when summed. The filer also disclosed three sales in the prior three months totaling 8,239 shares for gross proceeds of $261,188.89. The notice includes the seller's attestation regarding absence of undisclosed material adverse information.

Nektar Therapeutics (NKTR) insider sale disclosed on Form 4. Jonathan Zalevsky, Chief R&D Officer, reported selling 485 shares of common stock on 09/02/2025 under a Rule 10b5-1 trading plan at a weighted average price of $30.10 per share. After the sale he beneficially owned 19,183 shares, held directly. The filing states the trades executed at prices ranging from $30.00 to $30.28 and the Form 4 was signed by an attorney-in-fact on 09/04/2025.

Robin W. Howard, President & CEO and director of Nektar Therapeutics (NKTR), reported an insider sale on 09/02/2025. The filing shows a disposition of 1,500 shares of common stock executed at a weighted-average price of $30.16, reducing his direct beneficial ownership to 67,840 shares. The report notes the sale was made pursuant to a Rule 10b5-1 trading plan and that the trades occurred at prices between $30.00 and $30.30. The form also discloses an indirect ownership of 28 shares held by his spouse. The filing was signed by an attorney-in-fact on 09/04/2025.

Nektar Therapeutics (NKTR) filing reports a proposed sale of 5,166 common shares through Fidelity Brokerage Services with an aggregate market value of $174,119.16, to be sold approximately on 09/04/2025 on NASDAQ. The filing details that these shares were acquired via restricted stock vesting between 11/15/2017 and 05/15/2019, totaling specified lots (190; 1,346; 1,073; 1,072; 1,011; 474). It also discloses recent sales by the same person: 1,573 shares on 08/19/2025 for $41,826.23 and 1,500 shares on 09/02/2025 for $45,243.50. The signer represents no undisclosed material adverse information.

Nektar Therapeutics (NKTR) filed a Form 144 notice for a proposed sale of 1,721 common shares held by Jonathan Zalevsky. The shares are to be sold through Fidelity Brokerage Services on the NASDAQ with an aggregate market value reported as $57,688.44 and the company outstanding share count shown as 19,018,573. The approximate sale date is 09/04/2025. The shares were acquired via restricted stock vesting on four dates in 2023–2024 (totaling 1,721 shares). The filing also discloses two prior sales in the past three months: 725 shares on 08/19/2025 for $19,277.83 and 485 shares on 09/02/2025 for $14,600.10. The filer attests there is no undisclosed material information.