X0609 4 2026-08-07 0000797721 VIASAT INC VSAT 0001684559 Blair Robert James false 6155 EL CAMINO REAL CARLSBAD CA 92009 false true false false SVP, General Counsel false $.0001 par value common stock 2026-08-07 4 S false 27064 79.7618 D 22380 D $.0001 par value common stock 241 I By 401(k) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.36 to $80.325. 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. Includes 150 shares purchased under the Viasat Employee Stock Purchase Plan on 07/31/2026. The total reported here has been adjusted by -1 shares to correct a rounding/calculation error in the previously filed Form 4. /s/ Stacy Nguyen, Attorney-in-Fact 2026-08-11