Schedule 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No.    )

Filed by the Registrant ☒

Filed by a party other than the Registrant ☐

Check the appropriate box:

Payment of Filing Fee (Check the appropriate box):

(1)  Title of each class of securities to which transaction applies:

(2) Aggregate number of securities to which transaction applies:

(3)  Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

(4) Proposed maximum aggregate value of transaction:

(5) Total fee paid:

(1)  Amount Previously Paid:

(2)  Form, Schedule or Registration Statement No.:

(3)  Filing Party:

(4)  Date Filed:

*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 6, 2021. Meeting Information RLI CORP. Meeting Type: Annual Meeting For holders as of: March 8, 2021 Date: May 6, 2021 Time: 2:00 PM Location: Meeting live via the Internet-please visit www.virtualshareholdermeeting.com/rli2021. The company will be hosting the meeting live via the Internet this year. To attend the meeting via the Internet please visitwww.virtualshareholdermeeting.com/rli2021 and be sure to have the information that is printed in the box marked by the arrow XXXX XXXX XXXX XXXX (located on the following page). RLI CORP. 9025 NORTH LINDBERGH DRIVE PEORIA, IL 61615 You are receiving this communication because you hold shares in the company named above. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. D34791-P51872 See the reverse side of this notice to obtain proxy materials and voting instructions.

D34792-P51872 Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before April 22, 2021 to facilitate timely delivery. How to View Online: Have the information that is printed in the box marked by the arrow XXXX XXXX XXXX XXXX (located on the following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*: sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow XXXX XXXX XXXX XXXX (located on the following page) in the subject line. Proxy Materials Available to VIEW or RECEIVE: Vote By Internet: Before The Meeting: Go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow XXXX XXXX XXXX XXXX (located on the following page) available and follow the instructions. During The Meeting: Go to www.virtualshareholdermeeting.com/rli2021. Have the information that is printed in the box marked by the arrow XXXX XXXX XXXX XXXX (located on the following page) available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. Before You Vote How to Access the Proxy Materials How To Vote Please Choose One of the Following Voting Methods NOTICE AND PROXY STATEMENT ANNUAL REPORT

Voting Items 3. Ratify the selection of Deloitte & Touche LLP as the Company's Independent Registered Public Accounting Firm. 1. Election of Directors 01) Kaj Ahlmann 02) Michael E. Angelina 03) John T. Baily 04) Calvin G. Butler, Jr. 05) David B. Duclos 06) Susan S. Fleming 07) Jordan W. Graham 08) Craig W. Kliethermes 09) Jonathan E. Michael 10) Robert P. Restrepo, Jr. 11) Debbie S. Roberts 12) Michael J. Stone 2. Advisory vote to approve executive compensation (the "Say-on-Pay" vote). The Board of Directors recommends you vote FOR proposals 2 and 3. The Board of Directors recommends you vote FOR the following: NOTE: This proxy also grants the Proxies the ability to vote in their discretion upon other matters as may properly come before the meeting. Nominees: D34793-P51872

Voting Items 3. Ratify the selection of Deloitte & Touche LLP as the Company's Independent Registered Public Accounting Firm. 1. Election of Directors 01) Kaj Ahlmann 02) Michael E. Angelina 03) John T. Baily 04) Calvin G. Butler, Jr. 05) David B. Duclos 06) Susan S. Fleming 07) Jordan W. Graham 08) Craig W. Kliethermes 09) Jonathan E. Michael 10) Robert P. Restrepo, Jr. 11) Debbie S. Roberts 12) Michael J. Stone 2. Advisory vote to approve executive compensation (the "Say-on-Pay" vote). The Board of Directors recommends you vote FOR proposals 2 and 3. The Board of Directors recommends you vote FOR the following: Nominees: NOTE: This proxy also grants the Trustee the ability to vote in its discretion upon other matters as may properly come before the meeting. D34794-P51872

D34795-P51872