144 0001232884 XXXXXXXX LIVE 0001078075 NETSCOUT SYSTEMS INC 000-26251 310 LITTLETON ROAD WESTFORD MA 01886 978-614-4000 SZABADOS MICHAEL Officer Common Stock Merrill Lynch

225 Liberty Street Floor 37 New York NY 10281

4000 153600.00 71495215 05/15/2026 NASDAQ Common Stock 06/26/2023 Vesting of restricted stock unit award NETSCOUT SYSTEMS INC N 3117 06/26/2023 Granted as part of issuer equity compensation plan Common Stock 06/28/2023 Vesting of restricted stock unit award NETSCOUT SYSTEMS INC N 883 06/28/2023 Granted as part of issuer equity compensation plan N SZABADOS MICHAEL

310 LITTLETON ROAD WESTFORD MA 01886

Common Stock 02/18/2026 4000 116720.00 05/15/2026 05/23/2025 Michael Szabados