David I. Rainer
CEO/Chairman at California BanCorp
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 3 years
- Director since
- 2023
3 years of board service in total across 1 board, counting each seat separately. Longest: California BanCorp, 3 years.
Chief executive roles
Outstanding · grade A+
Out of 100, from shareholder return, dividends, growth and acquisitions.
Partial: only 15% of the scoring weight is on file.
- Earnings growth 15%
- 100
58% a year in earnings per share
15% of the scoring weight is on file. Figures cover December 2022 – December 2023.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
California BanCorp May 27, 202698.7%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 2, 2026 | California BanCorp | Shares withheld for tax | −3,518 | $21.30 | $74,933 |
| May 7, 2026 | California BanCorp | Open-market sale | −75,000 | $19.00 | $1,425,000 |
| Mar 2, 2026 | California BanCorp | Grant or award | +65,396 | — | — |
| Mar 2, 2026 | California BanCorp | Grant or award | +28,774 | — | — |
| Mar 1, 2026 | California BanCorp | Shares withheld for tax | −613 | $18.31 | $11,224 |
| Mar 1, 2026 | California BanCorp | Shares withheld for tax | −5,206 | $18.31 | $95,322 |
| Dec 15, 2025 | California BanCorp | Other | −110,523 | — | — |
| Dec 15, 2025 | California BanCorp | Other | +110,523 | — | — |
| Dec 9, 2025 | California BanCorp | Gift | −2,000 | — | — |
| Dec 1, 2025 | California BanCorp | Shares withheld for tax | −32,904 | $19.45 | $639,983 |
| Aug 27, 2025 | California BanCorp | Sold back to the company | −6,300 | $16.72 | $105,336 |
| Aug 2, 2025 | California BanCorp | Shares withheld for tax | −3,508 | $14.60 | $51,217 |
| Jun 13, 2025 | California BanCorp | Sold back to the company | −7,000 | $14.65 | $102,550 |
| Mar 3, 2025 | California BanCorp | Grant or award | +3,416 | — | — |
| Mar 3, 2025 | California BanCorp | Sold back to the company | −6,300 | $16.02 | $100,926 |
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