Netscout Systems, Inc.
A maker of network observability and cybersecurity tools, NetScout lets companies watch internet traffic in real time and defend against DDoS attacks; its nGeniusONE and Arbor products serve telecoms, governments, banks, and hospitals. Founded in 1984 as Frontier Software by Anil Singhal and Narendra Popat, the firm renamed itself NetScout to evoke "scouting" networks for trouble, and added its security arm by acquiring Arbor Networks. Fun fact: it built one of the first remote network monitoring probes in 1992.
Bought 16.2K
Sold 868.1K
Sold 902.8K
Sold 902.8K
Granted 796.1K
Sold 236.1K
Sold 236.1K
Granted 428.1K · Sold 215.1K
Granted 664.0K · Sold 401.2K
Granted 5.5K
Granted 184.1K · Sold 131.7K
Granted 160.7K · Sold 55.0K
Granted 315.5K · Sold 136.7K
Sold 25.2K
Granted 67.0K
Sold 23.9K
Granted 46.0K
Granted 825.2K · Sold 567.2K
Granted 62.8K · Sold 21.9K
Granted 37.0K
Granted 51.0K · Sold 16.0K
Granted 32.0K
Granted 29.7K
Granted 18.3K
Granted 112.1K · Sold 110.7K
Granted 18.1K
Granted 18.1K
Granted 66.1K · Sold 48.4K
Granted 17.0K
Granted 20.3K · Sold 6.0K
Granted 21.4K · Sold 17.9K
Granted 3.8K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Bannasch Eric +1 co-filer10% owner · 1 transaction | — | 4.18Mas of Nov 2011 | — | 16.2K | — |
| Ta Associates IncSee General Remarks · 14 transactions | — | 3.21Mas of Jul 2007 | — | — | 868.1K |
| Ta Advent VIII LPSee General Remarks · 15 transactions | — | 2.44Mas of Jul 2007 | — | — | 902.8K |
| Ta Associates VIII LLCSee General Remarks · 15 transactions | — | 2.44Mas of Jul 2007 | — | — | 902.8K |
| Singhal Anil KPresident & CEO, Director · 135 transactions | — | 1.90M | 796.1K | — | — |
| Advent Atlantic & Pacific III LPSee General Remarks · 15 transactions | — | 638.2Kas of Jul 2007 | — | — | 236.1K |
| Ta Associates Aap III PartnersSee General Remarks · 15 transactions | — | 638.2Kas of Jul 2007 | — | — | 236.1K |
| Sommers David PExecutive Vice-Chairman · 71 transactions | — | 197.4Kas of Sep 2012 | 428.1K | — | 215.1K |
| Downing JohnEVP, World-Wide Sales · 199 transactions | — | 135.8K | 664.0K | — | 401.2K |
| Schiciano Kenneth TDirector · 1 transaction | — | 131.2Kas of Nov 2006 | 5.5K | — | — |
| Hadzima Joseph G JrDirector · 68 transactions | — | 118.2K | 184.1K | — | 131.7K |
| Egan John RDirector · 25 transactions | — | 105.7K | 160.7K | — | 55.0K |
| Bua Jean ASee Remarks · 112 transactions | — | 71.4Kas of Feb 2025 | 315.5K | — | 136.7K |
| Ta Investors LLCSee General Remarks · 15 transactions | — | 68.1Kas of Jul 2007 | — | — | 25.2K |
| Donahue Robert EDirector · 13 transactions | — | 67.0K | 67.0K | — | — |
| Ta Executives Fund LLCSee General Remarks · 15 transactions | — | 64.7Kas of Jul 2007 | — | — | 23.9K |
| Vitale Vivian MDirector · 7 transactions | — | 46.0K | 46.0K | — | — |
| Szabados MichaelDirector · 257 transactions | — | 41.7K | 825.2K | — | 567.2K |
| Perretta ChristopherDirector · 13 transactions | — | 40.9K | 62.8K | — | 21.9K |
| Spradley Susan LouiseDirector · 6 transactions | — | 37.0Kas of Aug 2023 | 37.0K | — | — |
| Grasso AlfredDirector · 11 transactions | — | 35.0K | 51.0K | — | 16.0K |
| McGuigan Stuart MDirector · 7 transactions | — | 32.0Kas of Aug 2012 | 32.0K | — | — |
| Pearse StephenDirector · 8 transactions | — | 29.7Kas of Aug 2014 | 29.7K | — | — |
| Piazza Anthony JohnEVP & Chief Financial Officer · 15 transactions | — | 29.5K | 18.3K | — | — |
| Mullarkey Vincent JDirector · 25 transactions | — | 21.4Kas of Feb 2019 | 112.1K | — | 110.7K |
| Nash ShannonDirector · 3 transactions | — | 18.1K | 18.1K | — | — |
| Pelage MarleneDirector · 3 transactions | — | 18.1K | 18.1K | — | — |
| Demarines VictorDirector · 17 transactions | — | 17.7Kas of May 2017 | 66.1K | — | 48.4K |
| Lico James ADirector · 5 transactions | — | 17.0Kas of Sep 2018 | 17.0K | — | — |
| Munshi SanjayChief Operating Officer · 18 transactions | — | 9.0K | 20.3K | — | 6.0K |
| Wakely JeffreyVP Finance & Administration · 24 transactions | — | 3.5Kas of May 2010 | 21.4K | — | 17.9K |
| Watt Eric ToddChief Accounting Officer · 2 transactions | — | 2.4K | 3.8K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over all recorded history: -4.91M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.