SEC Form 4 · accession 0001035986-26-000006
SI-BONE, Inc. · SIBN
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Jeffrey W Dunn
Director
Period of report
Sep 1, 2026
Accepted (ET)
Sep 3, 2026 · 7:26 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001459839
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Sep 1, 2026 | M | 18,633 | $4.68 | A | 34,690 | D | |
| Common Stock | Sep 1, 2026 | M | 1,367 | $4.68 | A | 36,057 | D | |
| Common StockF2 | Sep 1, 2026 | S | 18,633 | $18.908 | D | 17,424 | D | |
| Common StockF2,F3 | Sep 1, 2026 | S | 1,367 | $18.908 | D | 16,057 | D | |
| Common StockF4 | holding | — | — | — | 81,073 | I | by Trust |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (Right to Buy)F5 | $4.68 | Sep 1, 2026 | M | 1,367 | D | — | Mar 1, 2027 | Common Stock | 1,367 | 104,893 | D |
| Stock Option (Right to Buy)F5 | $4.68 | Sep 1, 2026 | M | 18,633 | D | — | Mar 1, 2027 | Common Stock | 18,633 | 86,260 | D |
Explanation of responses
- F1The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan dated May 7th, 2025.
- F2The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $18.6450 to $19.6449, inclusive. The Reporting Person undertakes to provide the Issuer, any securityholder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
- F3Includes 10,957 shares issuable on the settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
- F4Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.
- F5The shares subject to the option vest in equal monthly installments over four years commencing on the vesting commencement date, subject to Reporting Person's continued service through each relevant vesting date.