SEC Form 4 · Updated Daily
NTCT
— NETSCOUT SYSTEMS, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| CADIAN CAPITAL MANAGEMENT, LLC | 10%+ Owner | 4,196,674 | 2011-11-14 | P |
| Bannasch Eric | 10%+ Owner | 4,196,674 | 2011-11-14 | P |
| TA ASSOCIATES, L.P. | Reporting Owner | 3,261,105 | 2007-07-27 | S |
| TA ASSOCIATES VIII LLC | Reporting Owner | 2,478,166 | 2007-07-27 | S |
| TA ADVENT VIII LP | Reporting Owner | 2,478,166 | 2007-07-27 | S |
| TA ASSOCIATES AAP III PARTNERS | Reporting Owner | 648,129 | 2007-07-27 | S |
| ADVENT ATLANTIC & PACIFIC III LP | Reporting Owner | 648,129 | 2007-07-27 | S |
| SINGHAL ANIL K | Director · Officer | 459,643 | 2026-06-19 | M |
| SOMMERS DAVID P | Officer | 197,366 | 2012-09-07 | M |
| DOWNING JOHN | Officer | 127,809 | 2026-08-11 | S |
| HADZIMA JOSEPH G JR | Director | 125,185 | 2026-09-10 | M |
| EGAN JOHN R | Director | 112,740 | 2026-09-10 | M |
| DONAHUE ROBERT E | Director | 73,977 | 2026-09-10 | M |
| BUA JEAN A | Officer | 71,361 | 2025-02-13 | S |
| TA INVESTORS LLC | Reporting Owner | 69,133 | 2007-07-27 | S |
| TA EXECUTIVES FUND LLC | Reporting Owner | 65,677 | 2007-07-27 | S |
| VITALE VIVIAN M | Director | 52,970 | 2026-09-10 | M |
| Grasso Alfred | Director | 42,000 | 2026-09-10 | M |
| SZABADOS MICHAEL | Director | 41,654 | 2026-08-25 | S |
| Perretta Christopher | Director | 40,866 | 2026-09-11 | S |
| SPRADLEY SUSAN LOUISE | Director | 37,000 | 2023-08-25 | M |
| MCGUIGAN STUART M | Director | 32,014 | 2012-08-21 | M |
| Piazza Anthony John | Officer | 30,254 | 2026-08-25 | M |
| PEARSE STEPHEN | Director | 29,726 | 2014-08-12 | M |
| Pelage Marlene | Director | 25,085 | 2026-09-10 | M |
| Nash Shannon | Director | 25,085 | 2026-09-10 | M |
| MULLARKEY VINCENT J | Director | 21,383 | 2019-02-19 | M |
| DEMARINES VICTOR | Director | 17,732 | 2017-05-23 | S |
| LICO JAMES A | Director | 16,978 | 2018-09-12 | M |
| SCHICIANO KENNETH T | Director | 11,148 | 2006-10-30 | M |
| Munshi Sanjay | Officer | 9,729 | 2026-08-25 | M |
| Watt Eric Todd | Officer | 3,750 | 2026-01-27 | M |
| Wakely Jeffrey | Officer | 3,513 | 2010-05-04 | S |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-11 | Perretta Christopher | Open-market sale | 7,000 | $38.00 | 40,866 |
| 2026-09-10 | DONAHUE ROBERT E | Option exercise (derivative) | 7,000 | — | 7,000 |
| 2026-09-10 | DONAHUE ROBERT E | Option exercise | 7,000 | — | 73,977 |
| 2026-09-10 | EGAN JOHN R | Option exercise (derivative) | 7,000 | — | 7,000 |
| 2026-09-10 | EGAN JOHN R | Option exercise | 7,000 | — | 112,740 |
| 2026-09-10 | Grasso Alfred | Option exercise (derivative) | 7,000 | — | 7,000 |
| 2026-09-10 | Grasso Alfred | Option exercise | 7,000 | — | 42,000 |
| 2026-09-10 | HADZIMA JOSEPH G JR | Option exercise (derivative) | 7,000 | — | 7,000 |
| 2026-09-10 | HADZIMA JOSEPH G JR | Option exercise | 7,000 | — | 125,185 |
| 2026-09-10 | Nash Shannon | Option exercise (derivative) | 7,000 | — | 7,000 |
| 2026-09-10 | Nash Shannon | Option exercise | 7,000 | — | 25,085 |
| 2026-09-10 | Pelage Marlene | Option exercise (derivative) | 7,000 | — | 7,000 |
| 2026-09-10 | Pelage Marlene | Option exercise | 7,000 | — | 25,085 |
| 2026-09-10 | Perretta Christopher | Option exercise (derivative) | 7,000 | — | 7,000 |
| 2026-09-10 | Perretta Christopher | Option exercise | 7,000 | — | 47,866 |
| 2026-09-10 | VITALE VIVIAN M | Option exercise (derivative) | 7,000 | — | 7,000 |
| 2026-09-10 | VITALE VIVIAN M | Option exercise | 7,000 | — | 52,970 |
| 2026-09-09 | DONAHUE ROBERT E | Grant / award (derivative) | 7,000 | $0.00 | 14,000 |
| 2026-09-09 | EGAN JOHN R | Grant / award (derivative) | 7,000 | $0.00 | 14,000 |
| 2026-09-09 | Grasso Alfred | Grant / award (derivative) | 7,000 | $0.00 | 14,000 |
| 2026-09-09 | HADZIMA JOSEPH G JR | Grant / award (derivative) | 7,000 | $0.00 | 14,000 |
| 2026-09-09 | Nash Shannon | Grant / award (derivative) | 7,000 | $0.00 | 14,000 |
| 2026-09-09 | Pelage Marlene | Grant / award (derivative) | 7,000 | $0.00 | 14,000 |
| 2026-09-09 | Perretta Christopher | Grant / award (derivative) | 7,000 | $0.00 | 14,000 |
| 2026-09-09 | VITALE VIVIAN M | Grant / award (derivative) | 7,000 | $0.00 | 14,000 |
| 2026-08-25 | Munshi Sanjay | Option exercise (derivative) | 3,000 | — | 34,410 |
| 2026-08-25 | Munshi Sanjay | Tax withholding | 731 | $37.81 | 8,998 |
| 2026-08-25 | Munshi Sanjay | Option exercise | 3,000 | — | 9,729 |
| 2026-08-25 | Piazza Anthony John | Option exercise (derivative) | 2,500 | — | 38,300 |
| 2026-08-25 | Piazza Anthony John | Tax withholding | 737 | $37.81 | 29,517 |
| 2026-08-25 | Piazza Anthony John | Option exercise | 2,500 | — | 30,254 |
| 2026-08-25 | SZABADOS MICHAEL | Open-market sale | 4,000 | $37.70 | 41,654 |
| 2026-08-17 | Munshi Sanjay | Open-market sale | 2,269 | $39.27 | 6,729 |
| 2026-08-11 | DOWNING JOHN | Open-market sale | 8,000 | $38.41 | 127,809 |
| 2026-06-19 | DOWNING JOHN | Option exercise (derivative) | 5,184 | — | 43,200 |
| 2026-06-19 | DOWNING JOHN | Tax withholding | 2,305 | $39.67 | 135,809 |
| 2026-06-19 | DOWNING JOHN | Option exercise | 5,184 | — | 138,114 |
| 2026-06-19 | SINGHAL ANIL K | Option exercise (derivative) | 10,368 | — | 86,400 |
| 2026-06-19 | SINGHAL ANIL K | Tax withholding | 4,609 | $39.67 | 455,034 |
| 2026-06-19 | SINGHAL ANIL K | Option exercise | 10,368 | — | 459,643 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.