John J. Boniface

Companies

• SERA PROGNOSTICS, INC.Chief Scientific Officer Jul 14, 2021 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

• SPSERA PROGNOSTICS, INC. SERA145,842 shares²$297.5K at $2.04Mar 11, 2026

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

Recent filings

• Mar 11, 2026Sold 1,517 shares at $2.04 of SERA PROGNOSTICS, INC.²
• Mar 9, 2026Sold 3,038 shares at $1.96 of SERA PROGNOSTICS, INC.³
• Dec 10, 2025Sold 1,332 shares at $3.31 of SERA PROGNOSTICS, INC.⁴
• Nov 10, 2025Sold 7,767 shares at $2.62 of SERA PROGNOSTICS, INC.⁵
• Sep 11, 2025Sold 1,395 shares at $3.13 of SERA PROGNOSTICS, INC.⁶
• Aug 8, 2025Sold 7,094 shares at $2.54 of SERA PROGNOSTICS, INC.⁷
• Jun 10, 2025Sold 1,439 shares at $1.48 of SERA PROGNOSTICS, INC.⁸
• May 30, 2025Granted 3,703 shares at $1.33 of SERA PROGNOSTICS, INC.⁹
• May 8, 2025Sold 5,132 shares at $2.44 of SERA PROGNOSTICS, INC.¹⁰
• Mar 6, 2025Sold 2,044 shares at $4.16 of SERA PROGNOSTICS, INC.¹¹
• Mar 5, 2025Granted 47,010 shares of SERA PROGNOSTICS, INC.¹¹
• Feb 12, 2025Sold 5,915 shares at $4.58 of SERA PROGNOSTICS, INC.¹²
• Nov 11, 2024Sold 4,727 shares at $7.32 of SERA PROGNOSTICS, INC.¹³
• Aug 7, 2024Sold 5,022 shares at $7.42 of SERA PROGNOSTICS, INC.¹⁴
• May 8, 2024Sold 4,902 shares at $9.59 of SERA PROGNOSTICS, INC.¹⁵
• Mar 28, 2024Sold 24,474 shares at $9.04 of SERA PROGNOSTICS, INC.¹⁶
• Mar 28, 2024Exercised options 24,474 shares at $0.91 of SERA PROGNOSTICS, INC.¹⁶
• Mar 27, 2024Sold 48,909 shares at $9.62 of SERA PROGNOSTICS, INC.¹⁶
• Mar 27, 2024Exercised options 48,909 shares at $0.91 of SERA PROGNOSTICS, INC.¹⁶
• Mar 27, 2024Sold 3,753 shares at $9.62 of SERA PROGNOSTICS, INC.¹⁶
• Mar 26, 2024Sold 21,438 shares at $9.55 of SERA PROGNOSTICS, INC.¹⁷
• Mar 25, 2024Sold 22,163 shares at $9.10 of SERA PROGNOSTICS, INC.¹⁸
• Mar 6, 2024Sold 1,664 shares at $9.02 of SERA PROGNOSTICS, INC.¹⁹
• Feb 6, 2024Sold 5,665 shares at $8.03 of SERA PROGNOSTICS, INC.²⁰
• Dec 7, 2023Sold 5,000 shares at $4.80 of SERA PROGNOSTICS, INC.²¹