Nishimura Mika 4

What Happened

• Mika Nishimura, a member of the SI‑BONE (SIBN) Board of Directors, was granted 10,957 restricted stock units (RSUs) on June 4, 2026. The reported acquisition price is $0 per share (award/grant, Form 4 code A). The filing lists 10,957 shares issuable on settlement of the RSUs.

Key Details

• Transaction date: June 4, 2026; Form 4 filed June 8, 2026 (see timeliness note below).
• Grant size and price: 10,957 RSUs, $0.00 acquisition price (award).
• Shares owned/issuable after transaction: Filing reports 10,957 shares issuable on settlement of these RSUs; the filing does not state total beneficial ownership after the grant.
• Footnotes: Each RSU is a contingent right to receive one share. The RSUs vest 100% upon the earlier of (i) the next annual stockholder meeting or (ii) one year from the Vesting Commencement Date, subject to continuous service as a director.
• Filing timeliness: The Form 4 was filed four days after the transaction date. Form 4s are generally required within two business days of the transaction, so this filing appears later than the usual deadline.

Context

• These RSUs are a compensation award to a director (not a market purchase or sale). RSU grants are common for board compensation and do not by themselves indicate buying or selling sentiment. Upon vesting and settlement, the RSUs will convert to common shares unless other settlement terms apply.