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Halozyme Therapeutics, Inc. has amended its Bylaws following approval by the Board of Directors on April 22, 2026. Directors may now be removed at any time, with or without cause, by holders of a majority of shares entitled to vote in director elections.
The amendment also clarifies that stockholder actions that would otherwise be taken at an annual or special meeting may not be taken without a meeting, aligning the Bylaws with Article FIFTH of the Company’s Certificate of Incorporation. The full amended Bylaws are provided as Exhibit 3.1.
HALOZYME THERAPEUTICS, INC. President and CEO Helen Torley exercised stock options for 10,000 shares of common stock at an exercise price of $12.070 per share on April 6, 2026. The options were part of a grant dated February 22, 2017 with a ten-year term.
On the same date, she sold a total of 10,000 common shares in open-market transactions at weighted average prices of $63.139 and $64.015 per share under a pre-arranged Rule 10b5-1 trading plan. Following these transactions, she directly holds 767,780 common shares.
RAMSAY DAVID A reported acquisition or exercise transactions in this Form 4 filing.
HALOZYME THERAPEUTICS, INC. reported that interim CFO David A. Ramsay received a grant of 10,000 Restricted Stock Units tied to the company’s common stock. These RSUs were awarded as compensation rather than through an open-market purchase or sale.
The award vests in full on June 30, 2026, provided he remains employed through that date. After vesting, the shares are subject to a one-year holding period, meaning he must continue to hold the resulting shares for an additional year. Following this grant, his directly held RSU-related position from this award is 10,000 units.
HALOZYME THERAPEUTICS, INC. President and CEO Helen Torley reported an exercise-and-sell transaction in company stock. On April 1–2, she exercised options to acquire a total of 40,000 shares of common stock at an exercise price of $12.0700 per share, from options with a ten-year term expiring in February 2027.
Over the same two days, she sold 40,000 shares of common stock in open-market trades at per-share prices including $65.3580, $65.7140, $64.0630 and $64.8870. These transactions were carried out under a pre-arranged Rule 10b5-1 trading plan. After the transactions, she directly owned 767,780 shares of Halozyme common stock.
Halozyme Therapeutics received an amended Schedule 13G/A from The Vanguard Group reporting that Vanguard beneficially owns 0 shares of Halozyme common stock, representing 0% of the class. The filing explains Vanguard underwent an internal realignment and certain subsidiaries will report disaggregated holdings in accordance with SEC Release No. 34-39538 (January 12, 1998). The amendment is dated 03/13/2026 with a signature dated 03/27/2026. The filing states Vanguard's subsidiaries pursue the same investment strategies and that no single other person’s interest exceeds 5%.
HALOZYME THERAPEUTICS, INC. filed an initial ownership report for Interim CFO David A. Ramsay. This Form 3 shows his status as an officer but does not list any equity transactions or holdings in the provided data. It is an administrative disclosure of insider status rather than a trading event.
Halozyme Therapeutics, Inc. has issued its 2026 proxy for an online-only annual stockholder meeting on May 5, 2026. Stockholders will vote on electing two Class I directors, an advisory say-on-pay resolution for named executive officers, and ratifying Ernst & Young LLP as auditor for 2026.
The Board highlights a majority-vote standard for uncontested director elections, a fully independent board except for the CEO, and active board committees overseeing audit, compensation, and governance. Executive pay is heavily weighted to performance-based equity, with 2025 incentives tied to revenue and Adjusted EBITDA goals and strong stock performance, including record 2025 revenue of $1,397 million and 52% royalty revenue growth.
Halozyme Therapeutics has appointed David Ramsay as Interim Chief Financial Officer, effective March 23, 2026, while it continues an active search for a permanent CFO. Ramsay previously served as Halozyme’s CFO across multiple periods and has more than 30 years of financial leadership in biotechnology.
As Interim CFO he will receive a monthly salary of $50,000 and an equity grant of 10,000 restricted stock units that vest on June 30, 2026, subject to continued employment and a one-year holding period. If he remains Interim CFO on July 1, 2026, he will receive an additional 2,500 RSUs that vest on his employment termination date, also with a one-year holding period.
HALOZYME THERAPEUTICS, INC. senior vice president and chief operating officer Cortney Caudill reported an exercise-and-sell transaction in company stock. On March 9–10, 2026, she exercised options to acquire a total of 21,546 shares of common stock at an exercise price of $33.51 per share.
Over the same two days, she conducted open-market sales totaling 28,857 shares of common stock at weighted average prices around $67.64–$68.25, with specific trades executed in price ranges disclosed in the footnotes. Following these transactions, she directly holds 7,055 shares of common stock and retains 67,678 options to purchase common stock.