X0202 SCHEDULE 13D/A 0001415889-25-008727 0001734341 XXXXXXXX LIVE 2 Common Stock, par value $0.01 per share 06/15/2026 true 0000816761 88076W103 TERADATA CORP /DE/

17095 VIA DEL CAMPO SAN DIEGO CA 92127

Cynthia Paul 914-449-4660 Lynrock Lake LP 2 International Drive, Suite 130 Rye Brook NY 10573 0001734341 N Lynrock Lake LP AF N DE 7189401.00 0.00 7189401.00 0.00 7189401.00 N 7.6 IA PN 0001771092 N LYNROCK LAKE PARTNERS LLC AF N DE 7189401.00 0.00 7189401.00 0.00 7189401.00 N 7.6 HC OO 0001736572 N Paul Cynthia AF N X1 7189401.00 0.00 7189401.00 0.00 7189401.00 N 7.6 IN HC Common Stock, par value $0.01 per share TERADATA CORP /DE/ 17095 VIA DEL CAMPO SAN DIEGO CA 92127 The following constitutes Amendment No. 2 ("Amendment No. 2") to the Schedule 13D filed by the undersigned with the Securities and Exchange Commission (the "SEC") on March 21, 2025 and amended on February 12, 2026 (as amended, the "Schedule 13D"). This Amendment No. 2 amends and supplements the Schedule 13D as set forth below. Capitalized terms used herein and not otherwise defined in this Amendment No. 2 have the meanings set forth in the Schedule 13D. Item 3 is hereby amended and restated to read as follows: The source of the capital to purchase securities of the Issuer was Lynrock Fund's (as defined below) working capital, consisting of contributions from its general and limited partners (and which may, at any given time, include margin loans made by brokerage firms in the ordinary course of business). The aggregate purchase price of the 7,189,401 shares of Common Stock reported herein is approximately $169,604,662, including brokerage commissions. Item 5(a) is hereby amended and restated to read as follows: Rows 11 and 13 of each Reporting Person's cover page to this Schedule 13D set forth the aggregate number of shares of Common Stock and percentages of the shares of Common Stock beneficially owned by such Reporting Person and are incorporated by reference. The percentage set forth in each row 13 is based upon 94.1 million shares of the Issuer's Common Stock outstanding as of April 24, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q filed with the SEC on May 6, 2026. The Reporting Persons' ownership of the Issuer's securities consists of 7,189,401 shares of Common Stock held directly by Lynrock Lake Master Fund LP ("Lynrock Fund"). The Investment Manager is the investment manager of Lynrock Fund, and pursuant to an investment management agreement, the Investment Manager has been delegated full voting and investment power over securities of the Issuer held by Lynrock Fund. Ms. Paul, the Chief Investment Officer of the Investment Manager and Sole Member of the General Partner, the general partner of the Investment Manager, may be deemed to exercise voting and investment power over securities of the Issuer held by Lynrock Fund. Item 5(c) is hereby amended and restated to read as follows: The transactions in the securities of the Issuer by the Reporting Persons during the past sixty days are set forth in Exhibit 1 and are incorporated herein by reference. All of such transactions were effected in the open market unless otherwise noted therein. Item 7 is hereby amended to add the following exhibit: 1 - Transactions in Securities. Lynrock Lake LP /s/ Cynthia Paul 06/17/2026 LYNROCK LAKE PARTNERS LLC /s/ Cynthia Paul 06/17/2026 Paul Cynthia /s/ Cynthia Paul 06/17/2026