Greg Petersen

Companies

• Plus TherapeuticsBoard member Feb 14, 2020 to now¹
• PROSBoard member Jul 31, 2007 to now²
• Aterian, Inc.Board member Jun 12, 2019 to Oct 4, 2021³
• PikselBoard member Jul 3, 2012 to Jan 2, 2013⁴

Holdings

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

Shares held

• Plus Therapeutics CNSY48,921 shares⁵$83.2K at $1.70Sep 11, 2024
• AAterian, Inc. ATER58,355 shares⁶$32.7K at $0.56Sep 30, 2021
• PPROS PRO0 shares⁷Dec 9, 2025

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

Recent filings

• Dec 9, 2025Returned to company 125,170 shares at $23.25 of PROS⁷
• May 8, 2025Exercised options 6,125 shares at $16.87 of PROS⁸
• Sep 11, 2024Bought 12,500 shares at $1.35 of Plus Therapeutics⁵
• May 11, 2024Exercised options 7,205 shares at $30.63 of PROS⁹
• May 8, 2024Bought 12,255 shares at $2.04 of Plus Therapeutics¹⁰
• Sep 11, 2023Bought 20,000 shares at $1.70 of Plus Therapeutics¹¹
• May 12, 2023Sold 2,383 shares at $24.61 of PROS¹²
• May 11, 2023Exercised options 6,809 shares at $24.98 of PROS¹²
• Nov 4, 2022Sold 6,000 shares at $25.76 of PROS¹³
• May 17, 2022Bought 30,000 shares at $0.55 of Plus Therapeutics¹⁴
• May 13, 2022Sold 1,536 shares at $24.91 of PROS¹⁵
• May 12, 2022Exercised options 4,388 shares at $24.23 of PROS¹⁵
• Oct 27, 2021Bought 12,500 shares at $1.72 of Plus Therapeutics¹⁶
• Sep 30, 2021Granted 8,449 shares of Aterian, Inc.⁶
• Sep 30, 2021Granted 1,281 shares of Aterian, Inc.⁶