To not kill a pop on some (collaboration) news IMO. Imagine there’s one, and warrant holders rush to exercise. They’ll have to file the form with the SEC and will crash a rally like it did last week. If you are ONCS or any biotech, you will want to be able to raise cash on a rally. But new investors may not want to participate in such a raise if they think warrants will be exercised soon and take the share price down. So good house cleaning on Dan’s part getting rid of these warrants now.