John Oyler, CEO of ONC, has filed 173 Form 4 transactions across two companies, with a total sell value of $347,738,040.28 and zero buy value. All 25 recent trades are open-market sales (code S), concentrated exclusively in ONC stock between July 21 and August 12, 2026. The pattern shows a consistent selling bias with no offsetting purchases, a direction that has persisted across the entire recent window.
The transaction sizes vary widely, from a single $1,468 sale on August 11 to a $16,157,075.60 sale on August 10. The largest individual trades cluster on August 10, with seven sales exceeding $1 million, including the $16.1 million transaction and a $7.6 million sale. August 11 saw eight sales, with values ranging from $1,468 to $5.2 million. August 12 featured five sales, including two above $5 million ($7.49 million and $5.5 million) and three smaller transactions between $702,320 and $896,425.
The July 21 trade of $748,936.42 stands as the earliest recent transaction, followed by a two-week gap before the August 10-12 burst of 24 sales. The dollar values across these three days total approximately $347 million, representing the bulk of the reported sell activity. No acquisitions, option exercises, or other transaction codes appear in the recent data, reinforcing a one-directional sell pattern. The absence of any buy-side activity, combined with the high frequency and large dollar amounts, indicates a sustained reduction in ONC holdings over the reporting period.
AI-assisted summary