Insider Trading March 13, 2026

Dianthus R&D Chief Exercises Options, Sells Shares in $2.76M Transaction

Executive sale coincides with large underwritten offering and analyst upgrades amid Phase 3 progress

By Hana Yamamoto DNTH
Dianthus R&D Chief Exercises Options, Sells Shares in $2.76M Transaction
DNTH

Simrat Randhawa, Executive Vice President and Head of R&D at Dianthus Therapeutics, sold 33,830 shares for $2,756,468 and exercised options to acquire the same number of shares on March 12, 2026. The activity took place as the company completed a major public offering that raised about $719 million and after several analyst firms raised price targets following positive Phase 3 interim results.

Key Points

  • Simrat Randhawa sold 33,830 shares of Dianthus common stock on March 12, 2026, for $2,756,468 at $81.48 per share and exercised options to acquire an equal number of shares by paying $614,165 in exercise prices ranging from $8.44 to $22.07.
  • Dianthus completed an underwritten public offering that raised about $719 million in gross proceeds through the sale of 8,470,989 shares at $81 per share and issued pre-funded warrants for up to 402,468 shares at $80.999 per warrant, exercisable immediately.
  • Analysts adjusted views after Phase 3 CAPTIVATE interim results: Raymond James upgraded to Strong Buy with a $123 target, and Clear Street raised its target to $130 with a Buy rating; the company also announced a $400 million stock offering to fund development and commercial readiness.

Simrat Randhawa, Executive Vice President and Head of Research and Development at Dianthus Therapeutics, Inc. (NASDAQ:DNTH), completed a set of equity transactions on March 12, 2026. On that date, Randhawa sold 33,830 shares of the companys common stock at $81.48 per share, resulting in proceeds of $2,756,468.

Also on March 12, Randhawa exercised stock options to acquire 33,830 shares of Dianthus common stock. The option exercises were executed in a series of transactions with exercise prices spanning $8.44 to $22.07, and the aggregate exercise cost totaled $614,165.

An InvestingPro note in the reporting cites that the company holds more cash than debt on its balance sheet, and indicates 16 additional exclusive tips are available to subscribers.

Randhawa's transactions come amid a significant capital raise by Dianthus. The company completed an underwritten public offering that generated approximately $719 million in gross proceeds. That offering included the sale of 8,470,989 shares of common stock at $81 per share, reflecting proceeds that incorporated shares issued upon full exercise of the underwriters option to purchase additional shares. In addition to the common shares, Dianthus issued pre-funded warrants to purchase up to 402,468 shares at $80.999 per warrant; those warrants are exercisable immediately.

The recent $719 million transaction replaced an earlier announced $625 million stock offering priced at the same $81 per share. Separately, the company had disclosed a $400 million stock offering intended to support clinical and preclinical development as well as commercial readiness activities.

Following interim data from the Phase 3 CAPTIVATE study in chronic inflammatory demyelinating polyneuropathy, several brokerages adjusted their coverage. Raymond James upgraded Dianthus to a Strong Buy and set a price target of $123, citing positive interim results from that study. Clear Street raised its price target to $130 and maintained a Buy rating after Dianthus decided to proceed to Part B of the trial.


Note: The figures and events reported above reflect the transactions and company actions disclosed as part of the March 12, 2026 filings and subsequent company announcements.

Risks

  • Equity dilution risk - Multiple public offerings and the issuance of pre-funded warrants increase the number of shares outstanding, which can affect existing shareholders and market capitalization; this impacts capital markets and healthcare investors.
  • Dependence on financing - The company has executed large stock offerings to support clinical and preclinical development and commercial readiness, indicating reliance on capital markets for funding; this is a factor for biotechnology and healthcare sectors.
  • Uncertainty around clinical advancement - While interim Phase 3 results prompted analyst upgrades and progression to Part B of the trial, future trial outcomes remain subject to clinical risk and may influence investor sentiment in biopharma and healthcare markets.

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