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William Geist

Chief Operating Officer, Quanterix (United States).

Companies

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

  • Bio-Techne TECH24,943 shares3$1.8M at $72.53Aug 19, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

  • Aug 15, 2026Shares withheld for tax 1,976 shares at $72.40 of Bio-Techne4
  • Aug 15, 2026Exercised options 6,416 shares of Bio-Techne4
  • Nov 3, 2025Shares withheld for tax 4,520 shares at $62.57 of Bio-Techne5
  • Nov 3, 2025Exercised options 9,911 shares of Bio-Techne5
  • Aug 15, 2025Shares withheld for tax 803 shares at $53.60 of Bio-Techne6
  • Aug 15, 2025Exercised options 2,623 shares of Bio-Techne6
  • Feb 1, 2025Shares withheld for tax 1,109 shares at $73.55 of Bio-Techne7
  • Feb 1, 2025Exercised options 3,320 shares of Bio-Techne7
  • Nov 1, 2024Shares withheld for tax 3,270 shares at $75.31 of Bio-Techne8
  • Nov 1, 2024Exercised options 9,912 shares of Bio-Techne8
  • Feb 1, 2024Shares withheld for tax 1,111 shares at $68.54 of Bio-Techne9
  • Feb 1, 2022Granted 2,490 shares of Bio-Techne10

Sources

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