X0609 4 2026-10-09 0000797721 VIASAT INC VSAT 0001864468 Miller Craig Andrew false 6155 EL CAMINO REAL CARLSBAD CA 92009 false true false false SVP, Pres Viasat Government true $.0001 par value common stock 2026-10-09 4 M false 11893 15.96 A 53463 D $.0001 par value common stock 2026-10-09 4 S false 5188 71.0443 D 48275 D $.0001 par value common stock 2026-10-09 4 S false 5805 71.927 D 42470 D $.0001 par value common stock 2026-10-09 4 S false 900 72.7944 D 41570 D $.0001 par value common stock 4443 I By 401(k) $.0001 par value common stock 1592 I By spouse employee stock option (right to buy) 15.96 2026-10-09 4 A false 75000 0 A 2029-10-09 common stock 75000 75000 D employee stock option (right to buy) 15.96 2026-10-09 4 M false 11893 0 D 2029-10-09 common stock 11893 89320 D Transaction pursuant to Rule 10b5-1 Plan adopted on November 25, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $70.505 to $71.495. The reporting person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $71.50 to $72.345. The reporting person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $72.55 to $73.175. The reporting person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The Reporting Person previously filed a Form 4 on 11/21/2023 (the "Original Form 4") reporting the grant of an employee stock option that was subject to both time-based and performance-based vesting conditions. The Original Form 4 reported the number of shares underlying the option based on the target performance level. As a result of Viasat's stock price exceeding certain stock price hurdles, on October 9, 2026, the stock option fully vested with respect to 125,000 shares of Common Stock, and this Form 4 is being filed to report the vesting of additional shares above the target performance level. The stock option is fully vested and currently exercisable. /s/ Stacy Nguyen, Attorney-in-Fact 2026-10-13