AVIAT NETWORKS, INC.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Filed by the Registrant☑

Filed by a Party other than the Registrant☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ Confidential, for use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☑ Definitive Proxy Statement

☐Definitive Additional Materials

☐ Soliciting Material under § 240.14a-12

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

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☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rule 14a-6(i)(1) and 0-11

200 Parker Drive, Suite C100A

Austin, TX 78728

Notice of Annual Meeting of Stockholders for Fiscal Year 2026

to be held on November 11, 2026

TO THE HOLDERS OF COMMON STOCK OF AVIAT NETWORKS, INC.

NOTICE IS HEREBY GIVEN that the Annual Meeting of Stockholders for fiscal year 2026 (the “Annual Meeting”) of Aviat Networks, Inc. (the “Company”) will be held online only on November 11, 2026, at 12:30 p.m. Central Time. You may attend the Annual Meeting online via webcast by visiting www.virtualshareholdermeeting.com/AVNW2026 and entering your 16-digit control number included with the proxy card. You will be able to vote your shares and submit questions while attending the Annual Meeting online for the following purposes:

1. To elect seven directors to serve until the Company’s 2027 Annual Meeting of Stockholders or until their successors have been elected and qualified;

2. To vote on the ratification of the appointment by our Audit Committee of Grant Thornton LLP (“Grant Thornton”) as the Company’s independent registered public accounting firm for fiscal year 2027;

3. To hold an advisory, non-binding vote to approve the Company’s named executive officer compensation (“Say-on-Pay”);

4. To approve Amendment No. 2 of the Amended and Restated Tax Benefit Preservation Plan between the Company and Computershare Inc., as Rights Agent; and

5. To transact such other business as may properly come before the Annual Meeting or any adjournment or postponement or other delay thereof.

Only holders of common stock at the close of business on September 14, 2026 are entitled to notice of and to vote at the Annual Meeting or any adjournment, postponement or other delay thereof.

Whether or not you expect to attend the Annual Meeting online, we urge you to submit a proxy to vote your shares. This will help ensure the presence of a quorum at the Annual Meeting.

Notice of Annual Meeting

FY2026

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE STOCKHOLDER MEETING TO BE HELD ON NOVEMBER 11, 2026

This Proxy Statement for the 2026 Annual Meeting of Stockholders and our Annual Report to Stockholders for the Fiscal Year Ended July 3, 2026 are available at www.proxyvote.com

Your vote is important regardless of the number of shares you own. The Board of Directors urges you to sign, date and return the enclosed proxy card by mail (using the enclosed postage-paid envelope) as promptly as possible, or vote electronically or by telephone as described in the attached proxy statement. If you have any questions or need assistance in voting your shares, please contact Broadridge toll-free at 1-800-690-6903.

Notice of Materials Availability

FY2026

TABLE OF CONTENTS

FY2026 i

TABLE OF CONTENTS

(continued)

FY2026 ii

PROXY STATEMENT

FOR THE ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD ON NOVEMBER 11, 2026

This proxy statement (this “Proxy Statement”) applies to the solicitation of proxies by the Board of Directors (the “Board”) of Aviat Networks, Inc. (which we refer to as “Aviat,” the “Company,” “we,” “our,” and “ours”) for use at the Annual Meeting of Stockholders for fiscal year 2026 and any adjournment, postponement or other delay thereof (the “Annual Meeting”), to be held at 12:30 p.m., Central Time, on November 11, 2026. The Annual Meeting will be held online via webcast, at www.virtualshareholdermeeting.com/AVNW2026 (“Meeting Website”). Stockholders attending the meeting online via webcast will be able to submit questions and vote their shares electronically at the meeting. These proxy materials are being made available on or about September 14, 2026, to our stockholders entitled to notice of and to vote at the Annual Meeting.

To participate in the Annual Meeting, you will need the 16-digit control number included on your proxy card or voting instruction form. The Annual Meeting will begin promptly at 12:30 p.m., Central Time. Online access and check-in will begin at 12:15 p.m., Central Time. We encourage you to access the Meeting Website prior to the start time to allow ample time for login procedures and so you may address any technical difficulties before the Annual Meeting begins. If you encounter any difficulties accessing the webcast Annual Meeting during login or in the course of the meeting, please contact the phone number found on the login page at www.virtualshareholdermeeting.com/AVNW2026.

You may vote and ask questions during the Annual Meeting by following the instructions available on the Meeting Website at the time of the Annual Meeting. Stockholders may submit questions electronically, in real-time during the meeting. A list of stockholders entitled to vote at the Annual Meeting will be available for 10 days prior to the Annual Meeting for examination by any stockholder for any purpose germane to the Annual Meeting by emailing our Investor Relations team at investorinfo@aviatnet.com.