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Viking Global Investors discloses 15% stake in Standard Biotools

Viking Global Investors LP and affiliated entities disclosed beneficial ownership of 58,651,170 shares, or 15% of Standard Biotools Inc., in a Schedule 13D filing. The disclosure follows Viking's entry into a voting agreement on June 6, 2026, in connection with Standard Biotools' planned merger with Treeline Biosciences. Under the voting agreement, Viking committed to vote its shares in favor of merger-related proposals and against competing transactions, subject to a covered shares cap of 58,651,170 shares.

Key facts

  • Viking Global Investors LP and affiliates beneficially own 58,651,170 shares (15% of class)
  • Voting agreement entered June 6, 2026, in connection with Standard Biotools–Treeline Biosciences merger
  • Viking committed to vote in favor of merger approval, name change to 'Treeline Biosciences Holdings, Inc.', reverse stock split, and equity plans
  • Viking committed to vote against competing acquisitions and actions that would prevent or materially delay merger consummation
  • Covered shares cap: 58,651,170 shares
  • Reporting persons include Ole Andreas Halvorsen and Shabet Rose Sharon as individuals
  • Shares acquired for investment purposes in ordinary course of business
  • 10-day cooling-off period under Rule 13d-1(e)(2) applies from filing date

Why it matters

Viking's 15% stake and voting agreement give the firm significant influence over Standard Biotools' merger with Treeline, locking its shares behind transfer restrictions and commitment to support deal approval through shareholder voting.

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Derived from SCHEDULE 13D filed 2026-06-12. Not investment advice. View the source filing on SEC.gov →