Glenn P. Muir

Companies

• Cytek Biosciences, Inc.Board member Jun 12, 2026 to now¹
• Neuronetics, Inc.Board member Jun 27, 2018 to now²
• RepligenBoard member Sep 16, 2015 to now³
• G1 Therapeutics, Inc.Board member May 16, 2017 to Sep 18, 2024⁴
• Lifeward Ltd.Board member Dec 31, 2015 to Jun 29, 2017⁵
• HologicChief financial officer Feb 1, 2006 to May 12, 2014⁶
• HologicBoard member Feb 1, 2006 to Jul 17, 2013⁶

Holdings

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

Shares held

• RRepligen RGEN40,051 shares⁷$7.1M at $176.05May 14, 2026
• Neuronetics, Inc. STIM401,816 shares⁸$777.5K at $1.94May 28, 2026
• CBCytek Biosciences, Inc. CTKB3,086 shares⁹$16.2K at $5.24Aug 18, 2026
• GTG1 Therapeutics, Inc.0 shares¹⁰Sep 18, 2024

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

Recent filings

• Aug 18, 2026Exercised options 3,086 shares of Cytek Biosciences, Inc.⁹
• May 28, 2026Granted 30,000 shares of Neuronetics, Inc.⁸
• May 14, 2026Granted 995 shares of Repligen⁷
• May 7, 2026Exercised options 2,434 shares at $38.76 of Repligen¹¹
• Dec 16, 2025Exercised options 3,366 shares at $26.12 of Repligen¹²
• Oct 20, 2025Granted 7,554 shares of Neuronetics, Inc.¹³
• May 22, 2025Granted 30,000 shares of Neuronetics, Inc.¹⁴
• May 15, 2025Granted 973 shares of Repligen¹⁵
• Feb 7, 2025Other 44,444 shares at $2.25 of Neuronetics, Inc.¹⁶
• Nov 19, 2024Exercised options 19,000 shares at $36.29 of Repligen¹⁷
• Sep 18, 2024U 185,358 shares of G1 Therapeutics, Inc.¹⁰
• Sep 18, 2024Returned to company 20,000 shares of G1 Therapeutics, Inc.¹⁰
• Sep 5, 2024Bought 25,000 shares at $0.80 of Neuronetics, Inc.¹⁸
• Aug 29, 2024Bought 12,224 shares at $0.85 of Neuronetics, Inc.¹⁹
• Aug 28, 2024Bought 12,776 shares at $0.85 of Neuronetics, Inc.¹⁹
• Aug 20, 2024Bought 25,000 shares at $1.00 of Neuronetics, Inc.²⁰
• Aug 14, 2024Bought 25,171 shares at $0.75 of Neuronetics, Inc.²¹
• Aug 1, 2024Exercised options 5,000 shares at $36.29 of Repligen²²
• Jun 13, 2024Granted 10,000 shares of G1 Therapeutics, Inc.²³
• May 30, 2024Granted 25,000 shares of Neuronetics, Inc.²⁴
• May 16, 2024Granted 701 shares of Repligen²⁵
• Jun 15, 2023Granted 10,000 shares of G1 Therapeutics, Inc.²⁶
• May 25, 2023Granted 36,364 shares of Neuronetics, Inc.²⁷
• May 18, 2023Granted 686 shares of Repligen²⁸
• Jun 23, 2022Granted 10,000 shares of G1 Therapeutics, Inc.²⁹