Raymond J. Bartoszek

Companies

• Proteostasis Therapeutics (United States)Board member Dec 20, 2022 to now¹

Holdings

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

Shares held

• PTProteostasis Therapeutics (United States)0 shares²Jun 30, 2025

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

Recent filings

• Jun 30, 2025Returned to company 1,000 shares of Proteostasis Therapeutics (United States)²
• Jun 30, 2025Returned to company 1,001 shares of Proteostasis Therapeutics (United States)²
• Jun 30, 2025Returned to company 1,748,473 shares of Proteostasis Therapeutics (United States)²
• Jun 30, 2025Returned to company 31,000 shares of Proteostasis Therapeutics (United States)²
• Jun 25, 2025Granted 6,000 shares of Proteostasis Therapeutics (United States)³
• Jun 23, 2025Shares withheld for tax 4,706 shares at $0.26 of Proteostasis Therapeutics (United States)³
• Jun 23, 2025Exercised options 12,500 shares at $0.61 of Proteostasis Therapeutics (United States)³
• May 1, 2024Other 903,995 shares at $0.55 of Proteostasis Therapeutics (United States)⁴
• Dec 6, 2023Bought 250 shares at $4.50 of Proteostasis Therapeutics (United States)⁵
• Dec 5, 2023Bought 1,000 shares at $4.50 of Proteostasis Therapeutics (United States)⁵
• Dec 4, 2023Bought 1,000 shares at $4.33 of Proteostasis Therapeutics (United States)⁵
• Sep 19, 2023Bought 2,000 shares at $2.37 of Proteostasis Therapeutics (United States)⁶
• Sep 18, 2023Bought 2,500 shares at $2.08 of Proteostasis Therapeutics (United States)⁷
• Sep 15, 2023Bought 500 shares at $2.18 of Proteostasis Therapeutics (United States)⁷
• Jun 14, 2023Exercised options 60,018 shares at $0.14 of Proteostasis Therapeutics (United States)⁸
• Dec 30, 2022Bought 1,000 shares at $6.23 of Proteostasis Therapeutics (United States)⁹
• Dec 30, 2022Bought 1,001 shares at $6.23 of Proteostasis Therapeutics (United States)⁹
• Dec 30, 2022Bought 5,000 shares at $6.23 of Proteostasis Therapeutics (United States)⁹
• Dec 16, 2022Granted 860 shares of Proteostasis Therapeutics (United States)¹⁰
• Dec 16, 2022Granted 4,096 shares of Proteostasis Therapeutics (United States)¹⁰
• Dec 16, 2022Granted 375,757 shares at $11.55 of Proteostasis Therapeutics (United States)¹⁰
• Dec 16, 2022Granted 347,118 shares of Proteostasis Therapeutics (United States)¹⁰
• Dec 16, 2022Granted 61,585 shares of Proteostasis Therapeutics (United States)¹⁰