SEC ownership of First Seacoast Bancorp, Inc.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001943802.

Comparable stake leader

First Seacoast Bank Employee Stock Ownership Plan Trust

Disclosed value leader

ALLIANCEBERNSTEIN L.P.

Comparable rows

20/34

Latest evidence

31 Mar 2026

Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
20 of 34
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
First Seacoast Bank Employee Stock Ownership Plan Trust
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
31 Mar 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001943802
Issuer location
Dover, NH

Ownership snapshot

Top shareholders of First Seacoast Bancorp, Inc. (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
First Seacoast Bank Emplo...
Disclosed value leader
ALLIANCEBERNSTEIN L.P.
Comparable rows
20/34
Latest evidence
31 Mar 2026
13D/G 13F 3/4/5 Lead comparable stake: 8.8% 14 rows are not safely comparable across share classes. 13D/G row: First Seacoast Bank Employee Stock Ownership Plan Trust Showing 1-8 of 34 holder rows.

Quick read

First Seacoast Bank Employee Stock Ownership Plan Trust leads the comparable SEC ownership view at 8.8%.

20 of 34 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 First Seacoast Bank Employee Stock Ownership Plan Trust's linked filing trail.
Comparable ownership Top 5
First Seacoast Bank Employee Stoc... 8.8%
DAB Financial LLC 8.2%
SPENCE LIMITED, LP 5.3%
ALLIANCEBERNSTEIN L.P. 9.7%
VANGUARD CAPITAL MANAGEMENT LLC 3.9%

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

Detailed SEC evidence table Showing 1-8 of 34 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
First Seacoast Bank Employee Stock Ownership Plan Trust
13D/G
8.8%
$5,474,476
414,733 shares
-$45,844 31 Dec 2025
DAB Financial LLC
13D/G
8.2%
$4,483,468
384,847 shares
+$1,306,932 21 May 2025
SPENCE LIMITED, LP
13D/G
5.3%
$2,701,251
231,867 shares
$0 31 Dec 2024
ALLIANCEBERNSTEIN L.P.
13F
Company
13F
9.7%
$6,046,418
458,062 shares
31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC
13F
Company
13F
3.9%
$2,330,232
185,528 shares
31 Mar 2026
Elizabeth Park Capital Advisors, Ltd.
13F
Company
13F
2.9%
$1,734,235
138,076 shares
31 Mar 2026
Polaris Capital Management, LLC
13F
Company
13F
1.9%
$1,137,145
90,537 shares
31 Mar 2026
FLYWHEEL PRIVATE WEALTH LLC
13F
Company
13F
1.1%
$629,105
50,088 shares
31 Mar 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 buying over the last 12 months. Net value: +$34,544.

Buys
$54,804
Insiders: 4
Sells
$20,260
Insiders: 1
Net
+$34,544
Shares: +2,872
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 4,622 Shares: 1,750
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 0 $0 $0 $0
3-6 0 0 $0 $0 $0
6-9 2,322 1,750 $28,396 $20,260 +$8,136
9-12 2,300 0 $26,408 $0 +$26,408

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-14 of 14 reporting-owner rows connected to First Seacoast Bancorp, Inc.. Open a relationship link for the CIK-to-CIK filing trail.

Rows
14
Largest Forms 3/4/5 holder
Richard M. Donovan
Net 12M change
+$34,545
Latest report
09 Dec 2025
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Richard M. Donovan President and CFO $1,054,193 +$28,396 +2.8% Mixed 09 Dec 2025
James R. Brannen Chief Executive Officer, Director $826,377 +$5,654 +0.69% Mixed 15 Aug 2025
John E. Swenson EVP and COO $480,036 +$6,991 +1.5% Mixed 21 Aug 2025
Mark P. Boulanger Director $322,606 +$13,764 +4.5% Mixed 03 Sep 2025
Timothy F. Dargan SVP and Sr. CLO $236,140 Mixed 02 Dec 2024
James Jalbert Director $191,028 Mixed 02 Dec 2024
Michael J. Bolduc Director $191,028 Mixed 02 Dec 2024
Thomas J. Jean Director $178,491 -$20,260 -10% Mixed 17 Jun 2025
Jean Tremblay SVP and Sr. RLO $165,389 Mixed 02 Dec 2024
Dana C. Lynch Director $153,972 Mixed 02 Dec 2024
Janet Sylvester Director $119,820 Mixed 02 Dec 2024
Erica A. Johnson Director $115,714 Mixed 02 Dec 2024
J. Williamson Reid Director $111,929 Mixed 02 Dec 2024
Paul Nee SVP and CIO $106,922 Mixed 02 Dec 2024

Recent insider transactions for First Seacoast Bancorp, Inc.

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
Richard M. Donovan FSEA Common Stock Purchase 77.3% $28,396 $12.23 2,322 5,325 09 Dec 2025 By Roth IRA
Thomas J. Jean FSEA Common Stock Sale -25.4% $20,260 $11.58 -1,750 5,146 18 Nov 2025 Direct
Mark P. Boulanger FSEA Common Stock Purchase 22.6% $13,764 $11.47 1,200 6,501 03 Sep 2025 By IRA
John E. Swenson FSEA Common Stock Purchase 3.51% $6,991 $11.65 600 17,704 21 Aug 2025 Direct
James R. Brannen FSEA Common Stock Purchase 1.56% $5,654 $11.31 500 32,637 15 Aug 2025 Direct
* marks a reported price that did not pass the local price check.
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