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.

California BanCorp Director · Chairman and CEO
3 years · Since 2023

Chief executive roles

California BanCorp · CEO/Chairman
2023 – 2024 · Former
100 CEO score

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.

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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