SEC Form 3 · accession 0001209191-15-060960
Sierra Oncology, Inc. · SRRA
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Richard A Messmann
Officer — Chief Medical Officer
Period of report
Jul 15, 2015
Accepted (ET)
Jul 15, 2015 · 5:37 pm EDT
Rule 10b5-1 plan
unknown — predates the checkbox
Issuer CIK
0001290149
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | holding | — | — | — | 40,052 | D |
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)F1 | $0.373 | holding | — | — | — | — | Jul 16, 2023 | Common Stock | 41,014 | — | D |
| Stock Option (right to buy)F2 | $0.596 | holding | — | — | — | — | Jan 27, 2024 | Common Stock | 64,083 | — | D |
| Stock Option (right to buy)F3 | $0.596 | holding | — | — | — | — | Apr 13, 2024 | Common Stock | 8,629 | — | D |
| Stock Option (right to buy)F4 | $0.969 | holding | — | — | — | — | Sep 22, 2024 | Common Stock | 20,134 | — | D |
Explanation of responses
- F1The option vests as to 2.778% of the total shares monthly, beginning on July 30, 2013, with 100% of the total shares vested on June 30, 2016, subject to the reporting person's provision of service to the issuer on each vesting date. The option is immediately exercisable.
- F2The option vests as to 2.778% of the total shares monthly, beginning on January 31, 2014, with 100% of the total shares vested on December 31, 2016, subject to the reporting person's provision of service to the issuer on each vesting date. The option is immediately exercisable.
- F3The option vests as to 2.778% of the total shares monthly, beginning on April 30, 2014, with 100% of the total shares vested on March 30, 2017, subject to the reporting person's provision of service to the issuer on each vesting date. The option is immediately exercisable.
- F4The option vests as to 25% of the total shares on September 1, 2015, and then 2.0833% of the total shares vest monthly thereafter, with 100% of the total shares vested on September 1, 2018, subject to the reporting person's provision of service to the issuer on each vesting date. The option is immediately exercisable.