David B. Duclos - 13 May 2026 Form 4 Insider Report for RLI CORP (RLI)

Reporting relationship: Director
Issuer ticker: RLI
Reported as of: 13 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 15 May 2026, 16:15:11 UTC
Prior SEC filing: 15 May 2025
Next SEC filing: 29 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Jeffrey D. Fick, Attorney-in-Fact

Key filing fact

David B. Duclos filed Form 4 for RLI CORP (RLI) on 15 May 2026.

Key facts

This page summarizes David B. Duclos's Form 4 filing for RLI CORP (RLI).
4 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 15 May 2026, 16:15.

Change

Previous filing in this sequence was filed on 15 May 2025.
Current net transaction value: $0.

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 0001431045 Primary reporting owner

Duclos David B.

Relationship: Director
Address: 9025 N. LINDBERGH DRIVE, PEORIA
Signature: /s/ Jeffrey D. Fick, Attorney-in-Fact
Signature date: 15 May 2026

Reported non-derivative transactions

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

RLI transaction

Common Stock

Options Exercise

Transaction value
Shares: +2,353
Change %: +15%
Price: $0.000000^*
Shares after: 18,388
Date: 13 May 2026
Ownership: Directors' Trust
Footnotes: F1, F2, F3

RLI transaction

Common Stock

Other

Transaction value
Shares: +135
Change %: +0.73%
Price: $0.000000^*
Shares after: 18,523
Date: 13 May 2026
Ownership: Directors' Trust
Footnotes: F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

RLI transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value
Shares: -2,353
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 13 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,353
Exercise price
Footnotes: F1, F5

RLI transaction Derivative

Restricted Stock Unit

Award

Transaction value
Shares: +3,508
Change %
Price: $0.000000^*
Shares after: 3,508
Date: 14 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,508
Exercise price
Footnotes: F1, F6

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Shares acquired on the vesting of restricted stock units.

Footnote F2

Stock option grant price and number of stock options adjusted to reflect 2-for-1 stock split on 01/15/25.

Footnote F3

Ownership reflects dividend reinvestment.

Footnote F4

Shares acquired on the vesting of accrued special and regular dividend equivalents on restricted stock units.

Footnote F5

These restricted stock units are scheduled to vest 100% on the earlier of (1) the date of the RLI Corp. 2026 Annual Shareholders' Meeting or (2) one year after the date of grant.

Footnote F6

These restricted stock units are scheduled to vest 100% on the earlier of (1) the date of the RLI Corp. 2027 Annual Shareholders' Meeting or (2) one year after the date of grant.