Filed: 7/21/2026ACC: 0001754960-26-000560
📋 What this filing means
HINGHAM INSTITUTION FOR SAVINGS filed this quarterly 13F‑HR report disclosing 15 equity positions with a total reported market value of $134.30M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
15
Positions
$134.30M
Total AUM (reported)
773.69K
Total Shares
Allocation by class
CAP STK CL A$37.86M28.2%
CL A$33.43M24.9%
COM CL A$22.70M16.9%
CL B NEW$20.74M15.4%
COM$17.47M13.0%
SHS$2.10M1.6%
Portfolio Concentration
Top 3$81.30M60.5%
4–10$45.32M33.7%
11–25$7.68M5.7%
Top 3 weight
60.5%
Top 10 weight
94.3%
Voting Authority Distribution
Total shares with voting rights: 773.69K
Sole
Full voting authority
773.69K
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole15
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings15
Rows:
ALPHABET INC
SOLEShares105.95K
TypeSH
Market value$37.86M
28.19%
Sole
105.95K
Shared
0.00
None
0.00
VISA INC
SOLEShares66.15K
TypeSH
Market value$22.70M
16.90%
Sole
66.15K
Shared
0.00
None
0.00
BERKSHIRE HATHAWAY INC DEL
SOLEShares41.45K
TypeSH
Market value$20.74M
15.44%
Sole
41.45K
Shared
0.00
None
0.00
CHAIN BRIDGE BANCORP INC
SOLEShares334.14K
TypeSH
Market value$14.05M
10.46%
Sole
334.14K
Shared
0.00
None
0.00
MASTERCARD INCORPORATED
SOLEShares19.10K
TypeSH
Market value$9.81M
7.30%
Sole
19.10K
Shared
0.00
None
0.00
HEICO CORP NEW
SOLEShares26.50K
TypeSH
Market value$6.83M
5.09%
Sole
26.50K
Shared
0.00
None
0.00
PROGRESSIVE CORP
SOLEShares25.50K
TypeSH
Market value$5.57M
4.15%
Sole
25.50K
Shared
0.00
None
0.00
S&P GLOBAL INC
SOLEShares12K
TypeSH
Market value$4.89M
3.64%
Sole
12K
Shared
0.00
None
0.00
INTL GNRL INSURANCE HLDNGS L
SOLEShares80.40K
TypeSH
Market value$2.10M
1.57%
Sole
80.40K
Shared
0.00
None
0.00
RLI CORP
SOLEShares35K
TypeSH
Market value$2.07M
1.54%
Sole
35K
Shared
0.00
None
0.00
MOODYS CORP
SOLEShares4.50K
TypeSH
Market value$2.04M
1.52%
Sole
4.50K
Shared
0.00
None
0.00
NORTHEAST BK PORTLAND ME
SOLEShares12K
TypeSH
Market value$1.59M
1.18%
Sole
12K
Shared
0.00
None
0.00
BERKSHIRE HATHAWAY INC DEL
SOLEShares2.00
TypeSH
Market value$1.50M
1.12%
Sole
2.00
Shared
0.00
None
0.00
KINSALE CAP GROUP INC
SOLEShares4K
TypeSH
Market value$1.32M
0.98%
Sole
4K
Shared
0.00
None
0.00
AMPHENOL CORP
SOLEShares7K
TypeSH
Market value$1.23M
0.92%
Sole
7K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
ALPHABET INCSOLE | CAP STK CL A | 105.95K | SH | $37.86M 28.19% | 105.95K | 0.00 | 0.00 |
VISA INCSOLE | COM CL A | 66.15K | SH | $22.70M 16.90% | 66.15K | 0.00 | 0.00 |
BERKSHIRE HATHAWAY INC DELSOLE | CL B NEW | 41.45K | SH | $20.74M 15.44% | 41.45K | 0.00 | 0.00 |
CHAIN BRIDGE BANCORP INCSOLE | CL A | 334.14K | SH | $14.05M 10.46% | 334.14K | 0.00 | 0.00 |
MASTERCARD INCORPORATEDSOLE | CL A | 19.10K | SH | $9.81M 7.30% | 19.10K | 0.00 | 0.00 |
HEICO CORP NEWSOLE | CL A | 26.50K | SH | $6.83M 5.09% | 26.50K | 0.00 | 0.00 |
PROGRESSIVE CORPSOLE | COM | 25.50K | SH | $5.57M 4.15% | 25.50K | 0.00 | 0.00 |
S&P GLOBAL INCSOLE | COM | 12K | SH | $4.89M 3.64% | 12K | 0.00 | 0.00 |
INTL GNRL INSURANCE HLDNGS LSOLE | SHS | 80.40K | SH | $2.10M 1.57% | 80.40K | 0.00 | 0.00 |
RLI CORPSOLE | COM | 35K | SH | $2.07M 1.54% | 35K | 0.00 | 0.00 |
MOODYS CORPSOLE | COM | 4.50K | SH | $2.04M 1.52% | 4.50K | 0.00 | 0.00 |
NORTHEAST BK PORTLAND MESOLE | COM | 12K | SH | $1.59M 1.18% | 12K | 0.00 | 0.00 |
BERKSHIRE HATHAWAY INC DELSOLE | CL A | 2.00 | SH | $1.50M 1.12% | 2.00 | 0.00 | 0.00 |
KINSALE CAP GROUP INCSOLE | COM | 4K | SH | $1.32M 0.98% | 4K | 0.00 | 0.00 |
AMPHENOL CORPSOLE | CL A | 7K | SH | $1.23M 0.92% | 7K | 0.00 | 0.00 |