Filing Manager
Thomas A. Satterfield Jr.
Reporting Manager
Thomas A. Satterfield, Jr.
Symbol
OSTX
Shares outstanding
33,145,543 shares
Disclosed Ownership
3,115,681 shares
Ownership
9.4%
Form type
SCHEDULE 13G/A
Filing time
13 Aug 2025, 16:05:19 UTC
Date of event
30 Jun 2025
Previous filing
12 Feb 2025

Reporting Managers (1)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Thomas A. Satterfield, Jr. 9.4% 3,115,681 296,930 2,818,751 /s/ Thomas A. Satterfield, Jr. Thomas A. Satterfield, Jr.