Filed: 10/20/2026ACC: 0001754960-26-000908
📋 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 $134.05M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
15
Positions
$134.05M
Total AUM (reported)
812.19K
Total Shares
Allocation by class
CL A$36.12M26.9%
CAP STK CL A$31.12M23.2%
COM CL A$23.77M17.7%
CL B NEW$20.64M15.4%
COM$19.96M14.9%
SHS$2.44M1.8%
Portfolio Concentration
Top 3$75.53M56.3%
4–10$50.57M37.7%
11–25$7.94M5.9%
Top 3 weight
56.3%
Top 10 weight
94.1%
Voting Authority Distribution
Total shares with voting rights: 812.19K
Sole
Full voting authority
812.19K
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
SOLEShares90.45K
TypeSH
Market value$31.12M
23.22%
Sole
90.45K
Shared
0.00
None
0.00
VISA INC
SOLEShares66.15K
TypeSH
Market value$23.77M
17.73%
Sole
66.15K
Shared
0.00
None
0.00
BERKSHIRE HATHAWAY INC DEL
SOLEShares41.45K
TypeSH
Market value$20.64M
15.40%
Sole
41.45K
Shared
0.00
None
0.00
CHAIN BRIDGE BANCORP INC
SOLEShares336.14K
TypeSH
Market value$15.49M
11.55%
Sole
336.14K
Shared
0.00
None
0.00
MASTERCARD INCORPORATED
SOLEShares19.10K
TypeSH
Market value$10.53M
7.86%
Sole
19.10K
Shared
0.00
None
0.00
HEICO CORP NEW
SOLEShares32.50K
TypeSH
Market value$7.42M
5.54%
Sole
32.50K
Shared
0.00
None
0.00
PROGRESSIVE CORP
SOLEShares35.50K
TypeSH
Market value$7.36M
5.49%
Sole
35.50K
Shared
0.00
None
0.00
S&P GLOBAL INC
SOLEShares12K
TypeSH
Market value$4.73M
3.53%
Sole
12K
Shared
0.00
None
0.00
NORTHEAST BK PORTLAND ME
SOLEShares21K
TypeSH
Market value$2.60M
1.94%
Sole
21K
Shared
0.00
None
0.00
INTL GNRL INSURANCE HLDNGS L
SOLEShares100.40K
TypeSH
Market value$2.44M
1.82%
Sole
100.40K
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
RLI CORP
SOLEShares35K
TypeSH
Market value$1.94M
1.44%
Sole
35K
Shared
0.00
None
0.00
BERKSHIRE HATHAWAY INC DEL
SOLEShares2.00
TypeSH
Market value$1.49M
1.11%
Sole
2.00
Shared
0.00
None
0.00
KINSALE CAP GROUP INC
SOLEShares4K
TypeSH
Market value$1.29M
0.96%
Sole
4K
Shared
0.00
None
0.00
AMPHENOL CORP
SOLEShares14K
TypeSH
Market value$1.18M
0.88%
Sole
14K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
ALPHABET INCSOLE | CAP STK CL A | 90.45K | SH | $31.12M 23.22% | 90.45K | 0.00 | 0.00 |
VISA INCSOLE | COM CL A | 66.15K | SH | $23.77M 17.73% | 66.15K | 0.00 | 0.00 |
BERKSHIRE HATHAWAY INC DELSOLE | CL B NEW | 41.45K | SH | $20.64M 15.40% | 41.45K | 0.00 | 0.00 |
CHAIN BRIDGE BANCORP INCSOLE | CL A | 336.14K | SH | $15.49M 11.55% | 336.14K | 0.00 | 0.00 |
MASTERCARD INCORPORATEDSOLE | CL A | 19.10K | SH | $10.53M 7.86% | 19.10K | 0.00 | 0.00 |
HEICO CORP NEWSOLE | CL A | 32.50K | SH | $7.42M 5.54% | 32.50K | 0.00 | 0.00 |
PROGRESSIVE CORPSOLE | COM | 35.50K | SH | $7.36M 5.49% | 35.50K | 0.00 | 0.00 |
S&P GLOBAL INCSOLE | COM | 12K | SH | $4.73M 3.53% | 12K | 0.00 | 0.00 |
NORTHEAST BK PORTLAND MESOLE | COM | 21K | SH | $2.60M 1.94% | 21K | 0.00 | 0.00 |
INTL GNRL INSURANCE HLDNGS LSOLE | SHS | 100.40K | SH | $2.44M 1.82% | 100.40K | 0.00 | 0.00 |
MOODYS CORPSOLE | COM | 4.50K | SH | $2.04M 1.52% | 4.50K | 0.00 | 0.00 |
RLI CORPSOLE | COM | 35K | SH | $1.94M 1.44% | 35K | 0.00 | 0.00 |
BERKSHIRE HATHAWAY INC DELSOLE | CL A | 2.00 | SH | $1.49M 1.11% | 2.00 | 0.00 | 0.00 |
KINSALE CAP GROUP INCSOLE | COM | 4K | SH | $1.29M 0.96% | 4K | 0.00 | 0.00 |
AMPHENOL CORPSOLE | CL A | 14K | SH | $1.18M 0.88% | 14K | 0.00 | 0.00 |