Oscar Health, Inc. insider Mario Schlosser sold 31,422 shares on 2026-09-03 at $31.45 per share, for a total value of about $988.22K. The trade was disclosed as being executed under a pre-scheduled Rule 10b5-1 plan, meaning the sale was set up in advance and is generally viewed as less informative about the insider’s current view of the stock than a discretionary, open-market decision. Schlosser is a senior insider, so his transactions can draw attention because executives typically have deep visibility into operations and strategy. That said, planned sales are often used for routine reasons such as diversification or managing tax obligations, and the 10b5-1 structure is specifically intended to reduce the appearance that trades are timed around new information. This sale also occurred alongside several other insider sales on the same day: Richard Scott Blackley sold about $907.93K, Janet Liang sold about $325.82K, and Adam McAnaney sold about $285.94K. A cluster of same-day sales can reflect coordinated trading windows and/or planned programs rather than a shared, newly formed view on the business, but the concentration is still a data point investors may track for patterns if it continues.