Brian S. Lam - 24 Feb 2026 Form 4 Insider Report for SAFETY INSURANCE GROUP INC (SAFT)

Reporting relationship: VP of Insurance Operations
Issuer ticker: SAFT
Reported as of: 24 Feb 2026
Net transaction value: -$34,749
SEC form: 4
Accepted by SEC: 03 Mar 2026, 17:48:11 UTC
Prior SEC filing: 04 Mar 2025
Source filing: View source filing
Reporting owner signature: /s/ Brian S. Lam

Key filing fact

Brian S. Lam filed Form 4 for SAFETY INSURANCE GROUP INC (SAFT) on 03 Mar 2026.

Key facts

This page summarizes Brian S. Lam's Form 4 filing for SAFETY INSURANCE GROUP INC (SAFT).
9 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Mar 2026, 17:48.

Change

Previous filing in this sequence was filed on 04 Mar 2025.
Current net transaction value: -$34,749.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002017175 Primary reporting owner

Lam Brian Siu-Gae

Relationship: VP of Insurance Operations
Address: 20 CUSTOM HOUSE STREET, BOSTON
Signature: /s/ Brian S. Lam
Signature date: 03 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SAFT transaction

Common Stock

Other

Transaction value: $0
Shares: -249
Change %: -4.1%
Price: $0.000000
Shares after: 5,849
Date: 25 Feb 2026
Ownership: Direct
Footnotes: F1

SAFT transaction

Common Stock

Award

Transaction value: $0
Shares: +1,721
Change %: +29%
Price: $0.000000
Shares after: 7,570
Date: 25 Feb 2026
Ownership: Direct
Footnotes: F2

SAFT transaction

Common Stock

Award

Transaction value: $0
Shares: +1,982
Change %: +26%
Price: $0.000000
Shares after: 9,552
Date: 25 Feb 2026
Ownership: Direct
Footnotes: F3

SAFT transaction

Common Stock

Tax liability

Transaction value: $2,924
Shares: -38
Change %: -0.4%
Price: $76.95
Shares after: 9,514
Date: 24 Feb 2026
Ownership: Direct
Footnotes: F4, F5, F6

SAFT transaction

Common Stock

Tax liability

Transaction value: $619
Shares: -8
Change %: -0.08%
Price: $77.42
Shares after: 9,506
Date: 24 Feb 2026
Ownership: Direct
Footnotes: F4, F5, F7

SAFT transaction

Common Stock

Tax liability

Transaction value: $5,375
Shares: -70
Change %: -0.74%
Price: $76.78
Shares after: 9,436
Date: 27 Feb 2026
Ownership: Direct
Footnotes: F4, F5, F8

SAFT transaction

Common Stock

Tax liability

Transaction value: $11,004
Shares: -142
Change %: -1.5%
Price: $77.49
Shares after: 9,294
Date: 27 Feb 2026
Ownership: Direct
Footnotes: F4, F5, F9

SAFT transaction

Common Stock

Tax liability

Transaction value: $1,295
Shares: -17
Change %: -0.18%
Price: $76.18
Shares after: 9,277
Date: 02 Mar 2026
Ownership: Direct
Footnotes: F4, F5, F10

SAFT transaction

Common Stock

Tax liability

Transaction value: $13,533
Shares: -176
Change %: -1.9%
Price: $76.89
Shares after: 9,101
Date: 02 Mar 2026
Ownership: Direct
Footnotes: F4, F5, F11

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 11 footnotes

Footnote F1

Represents the difference between performance shares, with a three year performance period, that were granted on February 22, 2023 and actual shares earned at the end of the performance period on December 31, 2025. Final shares were approved by the Compensation Committee on February 25, 2026.

Footnote F2

Represents restricted stock awards effective February 25, 2026, with respect to which sale or transfer rights shall vest over three years with installments of 30% on February 25, 2027, 30% on February 25, 2028, and the remaining 40% on February 25, 2029, provided the grantee meets certain employment conditions.

Footnote F3

Represents restricted stock awards granted effective February 25, 2026 with respect to which sale or transfer rights will vest over a three-year performance period commencing on January 1, 2026 and ending on December 31, 2028. Vesting of these shares is dependent upon the attainment of pre-established performance objectives, and any difference between shares granted and shares earned at the end of the performance period will be reported at the conclusion of the performance period in 2029.

Footnote F4

Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 25, 2025.

Footnote F5

Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3.

Footnote F6

Represents the weighted average sale price of multiple open market same day sales with prices ranging from $76.28 to $77.23 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request.

Footnote F7

Represents the weighted average sale price of multiple open market same day sales with prices ranging from $77.32 to $77.54 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request.

Footnote F8

Represents the weighted average sale price of multiple open market same day sales with prices ranging from $76.10 to $77.09 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request.

Footnote F9

Represents the weighted average sale price of multiple open market same day sales with prices ranging from $77.20 to $77.73 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request.

Footnote F10

Represents the weighted average sale price of multiple open market same day sales with prices ranging from $75.50 to $76.22 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request.

Footnote F11

Represents the weighted average sale price of multiple open market same day sales with prices ranging from $76.53 to $77.17 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request.