SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities

Exchange Act of 1934 (Amendment No. ___)

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☐  Soliciting Material pursuant to §240.14a-12

Coastal Financial Corporation

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*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 20, 2019 COASTAL FINANCIAL CORPORATION Meeting Information Meeting Type: Annual Meeting For holders as of: March 29, 2019 Date: May 20, 2019 Location: Evergreen Branch Coastal Community Bank 5415 Evergreen Way Everett, Washington 98203 Time: 6:00 PM PDT COASTAL FINANCIAL CORPORATION 5415 EVERGREEN WAY EVERETT,WA 98203 You are receiving this communication because you hold shares in the above named company. 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. See the reverse side of this notice to obtain proxy materials and voting instructions. 0000414105_1 R1.0.1.18

Before You Vote How to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE: 1. Combined Document How to View Online: Have the information that is printed in the box marked by the arrow following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: (located on the 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 g(locatedonthefollowingpage)inthesubjectline.Requests,instructionsandotherinquiriessenttothise-mailaddresswillNOTbeforwardedtoyourinvestmentadvisor.PleasemaketherequestasinstructedaboveonorbeforeMay06,2019tofacilitatetimelydelivery.HowTo Vote Please Choose One of the Following Voting Methods Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow gavailableandfollowtheinstructions.VoteBy Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. 0000414105_2 R1.0.1.18

Voting items The Board of Directors recommends you vote FOR the following: 1. Election of 4 Directors for a 3-year term, Christopher D. Adams, Steven D. Hovde, Stephan Klee and Thomas D. Lane and 1 Director for a 2-year term Sadhana Akella-Mishra. Nominees 01 Christopher D. Adams 02 Steven D. Hovde 03 Stephan Klee 04 Thomas D. Lane 05 Sadhana Akella-Mishra The Board of Directors recommends you vote FOR the following proposal: 2. Ratification of the appointment of Moss Adams LLP as the independent registered public accounting firm for the fiscal year 2019. NOTE: Such other business as may properly come before the meeting or any adjournment thereof. 0000414105_3 R1.0.1.18

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