Form4insider filings, from the source

Insider · CIK 0001501240

John Niederhuber

Files at: APVO, EBS. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Aug 6, 2026 MForm 4 →Aug 10, 9:30 pm EDTAptevo Therapeutics Inc.APVO400——400—
May 18, 2016 DForm 4/A →May 23, 8:39 am EDTEmergent BioSolutions Inc.EBS7,833——30,300— plan?
May 18, 2016 DForm 4 →May 20, 6:23 pm EDTEmergent BioSolutions Inc.EBS7,833——22,467— plan? amended
May 21, 2015 AForm 4 →May 21, 2:46 pm EDTEmergent BioSolutions Inc.EBS9,400——30,300— plan?

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Aug 6, 2026 MForm 4 →Aug 10, 9:30 pm EDTAptevo Therapeutics Inc.APVO400——0—
Jun 1, 2018 AForm 4 →Jun 4, 6:55 pm EDTAptevo Therapeutics Inc.APVO25,000——25,000—
Jun 1, 2017 AForm 4 →Jun 1, 9:41 pm EDTAptevo Therapeutics Inc.APVO12,500——12,500—
Aug 3, 2016 AForm 4 →Aug 5, 8:33 pm EDTAptevo Therapeutics Inc.APVO18,750——18,750—