SEC ownership of California BanCorp \ CA

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001795815.

Comparable stake leader

WELLINGTON MANAGEMENT GROUP LLP

Disclosed value leader

WELLINGTON MANAGEMENT GROUP LLP

Comparable rows

50/50

Latest evidence

20 Aug 2026

Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
50 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
WELLINGTON MANAGEMENT GROUP LLP
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
20 Aug 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001795815
Issuer location
San Diego, CA

Ownership snapshot

Top shareholders of California BanCorp \ CA (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
WELLINGTON MANAGEMENT GRO...
Disclosed value leader
WELLINGTON MANAGEMENT GRO...
Comparable rows
50/50
Latest evidence
20 Aug 2026
13D/G 13F 3/4/5 Lead comparable stake: 7.6% 13D/G row: WELLINGTON MANAGEMENT GROUP LLP Showing 1-8 of 50 holder rows.

Quick read

WELLINGTON MANAGEMENT GROUP LLP leads the comparable SEC ownership view at 7.6%.

50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens WELLINGTON MANAGEMENT GROUP LLP's linked filing trail.
Comparable ownership Top 5
WELLINGTON MANAGEMENT GROUP LLP 7.6%
FJ Capital Management LLC 6.3%
ALLIANCEBERNSTEIN L.P. 6.1%
BlackRock, Inc. 5.6%
ENDEAVOUR CAPITAL ADVISORS INC 5.4%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
WELLINGTON MANAGEMENT GROUP LLP
13D/G 13F
Company
7.6%
$51,001,274
2,447,278 shares
-$9,076,966 30 Jun 2026
FJ Capital Management LLC
13F 13D/G
Company
6.3%
from 13D/G
$42,816,489
2,054,534 shares
30 Jun 2026
ALLIANCEBERNSTEIN L.P.
13D/G 13F
Company
6.1%
$40,682,410
1,952,131 shares
-$8,237,844 30 Jun 2026
BlackRock, Inc.
13F 13D/G
Company
5.6%
from 13D/G
$40,129,483
1,925,599 shares
30 Jun 2026
ENDEAVOUR CAPITAL ADVISORS INC
13F 13D/G
Company · Jonah Marcus
5.4%
from 13D/G
$34,503,517
1,655,639 shares
30 Jun 2026
Castle Creek Capital Partners VI, LP
13D/G 3/4/5
10%+ Owner
4.7%
$28,037,174
1,522,105 shares
$0 31 Dec 2025
Fourthstone LLC
13D/G
4%
$21,707,252
1,301,394 shares
-$18,477,837 30 Sep 2025
David I. Rainer
3/4/5
Chairman and CEO, Director
1.6%
$10,373,255
497,757 shares
-$1,425,000 02 Aug 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to selling over the last 12 months. Net value: -$2,052,188.

Buys
$0
Insiders: 0
Sells
$2,052,188
Insiders: 4
Net
-$2,052,188
Shares: -107,500
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 0 Shares: 107,500
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 7,500 $0 $158,948 -$158,948
3-6 0 100,000 $0 $1,893,240 -$1,893,240
6-9 0 0 $0 $0 $0
9-12 0 0 $0 $0 $0

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 27 reporting-owner rows connected to California BanCorp \ CA. Open a relationship link for the CIK-to-CIK filing trail.

Rows
27
Largest Forms 3/4/5 holder
John Farkash
Net 12M change
-$2,052,188
Latest report
20 Aug 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
John Farkash 10%+ Owner $29,330,861 Mixed 27 Feb 2024
David I. Rainer Chairman and CEO, Director $10,373,255 -$1,425,000 -12% Median 02 Aug 2026
Stephen A. Cortese Director $8,368,908 Median 20 Aug 2026
Frank di Tomaso Director $7,371,365 Mixed 01 Jun 2026
Thomas G. Dolan EVP / Bancorp CFO/ CSO $6,600,132 Median 11 Aug 2026
Rochelle G. Klein Director $4,580,766 Mixed 01 Jun 2026
Thomas J. Dolan EVP / Bancorp CFO/ COO $4,213,443 Mixed 10 May 2023
Andrew J. Armanino Director $4,019,418 Median 20 Aug 2026
Richard Hernandez President $2,294,005 -$325,040 -12% Mixed 02 Aug 2026
Kevin J. Cullen Director $2,013,380 Median 20 Aug 2026
Steven E. Shelton Chief Executive Officer, Director $1,872,610 Mixed 02 Aug 2025
Michelle Wirfel EVP, Chief Operating Officer $1,800,220 Median 02 Aug 2026
Lester Machado Director $1,534,956 -$158,948 -9.4% Mixed 31 Jul 2026
Anne A. Williams Director $1,278,759 Mixed 01 Jun 2026
Martin Liska EVP / Chief Risk Officer $1,116,023 Median 11 Aug 2026
Jean Carandang Bank Chief Financial Officer $902,062 -$143,200 -14% Median 02 Aug 2026
SA THOMAS A Chief Operating Officer $900,992 Mixed 02 Aug 2024
Peter Nutz EVP/ Chief Credit Officer $855,212 Median 02 Aug 2026
Merchant Manisha EVP / Chief Legal Officer $752,591 Median 02 Aug 2026
David J. Volk Director $742,248 Mixed 01 Jun 2026

Recent insider transactions for California BanCorp \ CA

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Kevin J. Cullen BCAL Common Stock Award 6.15% 1,025 17,704 20 Aug 2026 Direct
Andrew J. Armanino BCAL Common Stock Award 6.15% 1,025 17,704 20 Aug 2026 Direct
Stephen A. Cortese BCAL Common Stock Award 0.29% 1,025 354,848 20 Aug 2026 Direct
Martin Liska BCAL Common Stock Other 3.63% 1,257 35,842 11 Aug 2026 MACH4 Trust
Martin Liska BCAL Common Stock Other -6.63% -1,257 17,710 11 Aug 2026 Direct
Thomas G. Dolan BCAL Common Stock Other 1.28% 3,352 264,525 11 Aug 2026 THOMAS G DOLAN LIVING TRUST DATED 8/9/2016
Thomas G. Dolan BCAL Common Stock Other -6.04% -3,352 52,180 11 Aug 2026 Direct
Thomas G. Dolan BCAL Common Stock Tax liability -3.27% -1,877 55,532 02 Aug 2026 Direct
Martin Liska BCAL Common Stock Tax liability -3.58% -704 18,967 02 Aug 2026 Direct
Peter Nutz BCAL Common Stock Tax liability -2.24% -939 41,037 02 Aug 2026 Direct
Merchant Manisha BCAL Common Stock Tax liability -2.53% -939 36,113 02 Aug 2026 Direct
Michelle Wirfel BCAL Common Stock Tax liability -1.6% -1,407 86,383 02 Aug 2026 Direct
Joann Yeung BCAL Common Stock Tax liability -2.06% -704 33,424 02 Aug 2026 Direct
David I. Rainer BCAL Common Stock Tax liability -2.43% -3,518 141,410 02 Aug 2026 Direct
Richard Hernandez BCAL Common Stock Tax liability -1.93% -1,407 71,528 02 Aug 2026 Direct
Jean Carandang BCAL Common Stock Tax liability -1.96% -704 35,285 02 Aug 2026 Direct
Lester Machado BCAL Common Stock Other 20.5% 9,142 53,712 31 Jul 2026 Lester Machado & Robert M Pedersen TR UA 03/13/14 Machado-Pedersen Family Trust
Lester Machado BCAL Common Stock Other -40.8% -9,142 13,249 31 Jul 2026 Direct
Lester Machado BCAL Common Stock Sale -25.1% $158,948 $21.19 -7,500 22,391 31 Jul 2026 Direct
Lester Machado BCAL Common Stock Options Exercise 33.5% 7,500 29,891 31 Jul 2026 Direct
Lester Machado BCAL Stock Options Options Exercise -100% -7,500 0 31 Jul 2026 Direct
Michelle Wirfel BCAL Common Stock Tax liability -0.11% -93 87,790 21 Jun 2026 Direct
Jean Carandang BCAL Common Stock Tax liability -3.19% -1,185 35,989 08 Jun 2026 Direct
Andrew J. Armanino BCAL Common Stock Award 23.7% 3,196 16,679 01 Jun 2026 Direct
Stephen A. Cortese BCAL Common Stock Award 0.91% 3,196 353,823 01 Jun 2026 Direct
David J. Volk BCAL Common Stock Award 11.3% 3,196 31,391 01 Jun 2026 Direct
Kevin J. Cullen BCAL Common Stock Award 23.7% 3,196 16,679 01 Jun 2026 Direct
Frank di Tomaso BCAL Common Stock Award 1.29% 3,196 250,580 01 Jun 2026 Direct
Anne A. Williams BCAL Common Stock Award 37% 3,196 11,828 01 Jun 2026 Direct
Frank L. Muller BCAL Common Stock Award 9.2% 3,196 37,933 01 Jun 2026 Direct
Lester Machado BCAL Common Stock Award 16.6% 3,196 22,391 01 Jun 2026 Direct
Rochelle G. Klein BCAL Common Stock Award 9.88% 3,196 35,539 01 Jun 2026 Direct
Kevin J. Cullen BCAL Common Stock Award 8.36% 1,040 13,483 21 May 2026 Direct
Stephen A. Cortese BCAL Common Stock Award 0.3% 1,040 350,627 21 May 2026 Direct
Andrew J. Armanino BCAL Common Stock Award 8.36% 1,040 13,483 21 May 2026 Direct
Richard Hernandez BCAL Common Stock Sale -18.9% $325,040 $19.12 -17,000 72,935 08 May 2026 Direct
David I. Rainer BCAL Common Stock Sale -17.4% $1,425,000 $19.00 -75,000 356,347 07 May 2026 DAVID AND ANNE RAINER TRUST U/A DTD 05/07/1997
Richard Hernandez BCAL Common Stock Tax liability -1.33% -1,208 89,935 05 May 2026 Direct
Michelle Wirfel BCAL Common Stock Tax liability -0.13% -115 87,883 28 Apr 2026 Direct
Peter Nutz BCAL Common Stock Tax liability -0.34% -143 41,976 20 Apr 2026 Direct
Thomas G. Dolan BCAL Common Stock Other 2% 5,114 261,173 15 Apr 2026 THOMAS G DOLAN LIVING TRUST DATED 8/9/2016
Thomas G. Dolan BCAL Common Stock Other -8.18% -5,114 57,409 15 Apr 2026 Direct
Michelle Wirfel BCAL Common Stock Tax liability -0.17% -154 87,998 12 Apr 2026 Direct
Martin Liska BCAL Common Stock Other 11.9% 3,674 34,585 10 Apr 2026 MACH4 Trust
Martin Liska BCAL Common Stock Other -15.7% -3,674 19,671 10 Apr 2026 Direct
Michelle Wirfel BCAL Common Stock Tax liability -0.67% -595 88,152 25 Mar 2026 Direct
Michelle Wirfel BCAL Common Stock Tax liability -0.1% -93 88,747 21 Mar 2026 Direct
Thomas G. Dolan BCAL Common Stock Gift -0.79% -2,050 256,059 16 Mar 2026 THOMAS G DOLAN LIVING TRUST DATED 8/9/2016
Thomas G. Dolan BCAL Common Stock Gift -0.79% -2,050 258,109 13 Mar 2026 THOMAS G DOLAN LIVING TRUST DATED 8/9/2016
Michelle Wirfel BCAL Common Stock Tax liability -0.71% -635 88,840 08 Mar 2026 Direct
* marks a reported price that did not pass the local price check.
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