John Niederhuber

Companies

• Aptevo Therapeutics Inc.Board member Aug 2, 2016 to now¹
• Emergent BioSolutionsBoard member Sep 15, 2010 to May 23, 2016²

Holdings

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

Shares held

• ATAptevo Therapeutics Inc. APVO400 shares³$644 at $1.61Aug 6, 2026

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

Recent filings

• Aug 6, 2026Exercised options 400 shares of Aptevo Therapeutics Inc.³
• Jul 17, 2025Exercised options 1 shares of Aptevo Therapeutics Inc.⁴
• Jun 2, 2024Exercised options 81 shares of Aptevo Therapeutics Inc.⁵
• Jun 1, 2024Exercised options 7 shares of Aptevo Therapeutics Inc.⁵
• Aug 9, 2023Exercised options 3,571 shares of Aptevo Therapeutics Inc.⁶
• Jun 1, 2023Exercised options 297 shares of Aptevo Therapeutics Inc.⁷
• Jun 1, 2022Exercised options 298 shares of Aptevo Therapeutics Inc.⁸
• Jun 14, 2019Bought 714 shares at $0.91 of Aptevo Therapeutics Inc.⁸