Sankarlingam Velchamy

Officer · ZM

As of 2026-09-16, Sankarlingam Velchamy has 77 Form 4 transactions on record across 1 company — 44 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Pattern in the record: open-market sales filed in September in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $13.7MIndirect: $0$13.7Mas of 2026-09-16
  • Direct $13.7M
  • Indirect $0
ZMdirect149,265 sh$13.7M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

ZM · 77 trades
2026-09-10: Sale, 2,384 sh ($228K)2026-09-10: Sale, 206 sh ($20K)2026-09-09: Withheld for tax, 3,579 sh ($345K)2026-09-09: Option exercise, 7,031 sh ($0)2026-09-09: Option exercise, 2,807 sh ($0)2026-09-09: Option exercise, 4,224 sh ($0)2026-07-15: Sale, 7,644 sh ($703K)2026-07-09: Withheld for tax, 10,559 sh ($923K)2026-07-09: Option exercise, 20,751 sh ($0)2026-07-09: Option exercise, 20,751 sh ($0)2026-06-09: Withheld for tax, 3,578 sh ($362K)2026-06-09: Option exercise, 4,223 sh ($0)2026-06-09: Option exercise, 2,807 sh ($0)2026-06-09: Option exercise, 7,030 sh ($0)2026-04-15: Sale, 4,698 sh ($405K)2026-04-15: Sale, 1,947 sh ($163K)2026-04-15: Sale, 1,000 sh ($85K)2026-04-09: Withheld for tax, 10,559 sh ($879K)2026-04-09: Withheld for tax, 2,466 sh ($205K)2026-04-09: Option exercise, 4,845 sh ($0)2026-04-09: Option exercise, 20,752 sh ($0)2026-04-09: Option exercise, 20,752 sh ($0)2026-04-09: Option exercise, 4,845 sh ($0)2026-03-10: Sale, 2,590 sh ($203K)2026-03-09: Withheld for tax, 3,579 sh ($277K)2026-03-09: Option exercise, 7,031 sh ($0)2026-03-09: Option exercise, 2,807 sh ($0)2026-03-09: Option exercise, 4,224 sh ($0)2026-02-27: Award / grant, 4,845 sh ($0)2026-01-12: Sale, 5,757 sh ($497K)2026-01-12: Sale, 1,811 sh ($158K)2026-01-09: Withheld for tax, 10,661 sh ($913K)2026-01-09: Option exercise, 20,752 sh ($0)2026-01-09: Option exercise, 20,752 sh ($0)2025-12-10: Sale, 2,595 sh ($228K)2025-12-09: Withheld for tax, 3,571 sh ($318K)2025-12-09: Option exercise, 4,223 sh ($0)2025-12-09: Option exercise, 2,807 sh ($0)2025-12-09: Option exercise, 7,030 sh ($0)2025-10-10: Sale, 5,947 sh ($486K)2025-10-10: Sale, 1,713 sh ($142K)2025-10-09: Withheld for tax, 10,538 sh ($841K)2025-10-09: Option exercise, 20,751 sh ($0)2025-10-09: Option exercise, 20,751 sh ($0)2025-09-10: Sale, 2,595 sh ($221K)2025-09-09: Withheld for tax, 3,571 sh ($304K)2025-09-09: Option exercise, 4,224 sh ($0)2025-09-09: Option exercise, 2,807 sh ($0)2025-09-09: Option exercise, 7,031 sh ($0)2025-07-10: Sale, 7,661 sh ($594K)2025-07-09: Withheld for tax, 10,538 sh ($816K)2025-07-09: Option exercise, 20,752 sh ($0)2025-07-09: Option exercise, 20,752 sh ($0)2025-06-10: Sale, 2,595 sh ($208K)2025-06-09: Withheld for tax, 3,571 sh ($287K)2025-06-09: Option exercise, 7,030 sh ($0)2025-06-09: Option exercise, 2,807 sh ($0)2025-06-09: Option exercise, 4,223 sh ($0)2025-04-15: Sale, 11,839 sh ($851K)2025-04-09: Withheld for tax, 10,538 sh ($703K)2025-04-09: Withheld for tax, 5,749 sh ($383K)2025-04-09: Option exercise, 11,320 sh ($0)2025-04-09: Option exercise, 20,752 sh ($0)2025-04-09: Option exercise, 20,752 sh ($0)2025-04-09: Option exercise, 11,320 sh ($0)2025-03-09: Withheld for tax, 3,571 sh ($271K)2025-03-09: Option exercise, 2,807 sh ($0)2025-03-09: Option exercise, 4,224 sh ($0)2025-03-09: Option exercise, 7,031 sh ($0)2025-02-25: Award / grant, 11,320 sh ($0)2025-01-10: Sale, 10,817 sh ($851K)2025-01-09: Option exercise, 20,751 sh ($0)2025-01-09: Option exercise, 20,751 sh ($0)2024-12-10: Sale, 3,618 sh ($307K)2024-12-09: Option exercise, 7,030 sh ($0)2024-12-09: Option exercise, 4,223 sh ($0)2024-12-09: Option exercise, 2,807 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-09-10ZMSale2,384 @ $95.76$228K−1.6% of holding149,471Form 4
2026-09-10ZMSale206 @ $96.37$20K−0.1% of holding149,265Form 4
2026-07-15ZMSale7,644 @ $91.98$703K−4.9% of holding148,403Form 4
2026-04-15ZMSale4,698 @ $86.18$405K−3.2% of holding141,971Form 4
2026-04-15ZMSale1,947 @ $83.80$163K−1.3% of holding147,669Form 4
2026-04-15ZMSale1,000 @ $85.15$85K−0.7% of holding146,669Form 4
2026-03-10ZMSale2,590 @ $78.24$203K−1.9% of holding137,044Form 4
2026-01-12ZMSale5,757 @ $86.34$497K−4.0% of holding137,993Form 4
2026-01-12ZMSale1,811 @ $87.21$158K−1.3% of holding136,182Form 4
2025-12-10ZMSale2,595 @ $87.84$228K−1.9% of holding133,659Form 4
2025-10-10ZMSale5,947 @ $81.79$486K−4.2% of holding134,508Form 4
2025-10-10ZMSale1,713 @ $82.73$142K−1.3% of holding132,795Form 4
2025-09-10ZMSale2,595 @ $85.09$221K−2.0% of holding130,242Form 4
2025-07-10ZMSale7,661 @ $77.50$594K−5.6% of holding129,377Form 4
2025-06-10ZMSale2,595 @ $80.26$208K−2.0% of holding126,393Form 4
2025-04-15ZMSale11,839 @ $71.91$851K−8.6% of holding125,529Form 4
2025-01-10ZMSale10,817 @ $78.69$851K−8.4% of holding117,760Form 4
2024-12-10ZMSale3,618 @ $84.94$307K−3.2% of holding107,826Form 4
59 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-09-09ZMWithheld for tax3,579151,855Form 4
2026-09-09ZMOption exercise7,031155,434Form 4
2026-09-09ZMOption exercise2,8070Form 4
2026-09-09ZMOption exercise4,2240Form 4
2026-07-09ZMWithheld for tax10,559156,047Form 4
2026-07-09ZMOption exercise20,751145,262Form 4
2026-07-09ZMOption exercise20,751166,606Form 4
2026-06-09ZMWithheld for tax3,578145,423Form 4
2026-06-09ZMOption exercise4,2234,224Form 4
2026-06-09ZMOption exercise2,8072,807Form 4
2026-06-09ZMOption exercise7,030149,001Form 4
2026-04-09ZMWithheld for tax10,559189,297Form 4
2026-04-09ZMWithheld for tax2,466191,676Form 4
2026-04-09ZMOption exercise4,8450Form 4
2026-04-09ZMOption exercise20,752199,856Form 4
2026-04-09ZMOption exercise20,752166,013Form 4
2026-04-09ZMOption exercise4,845194,142Form 4
2026-03-09ZMWithheld for tax3,579139,634Form 4
2026-03-09ZMOption exercise7,031143,213Form 4
2026-03-09ZMOption exercise2,8075,614Form 4
2026-03-09ZMOption exercise4,2248,447Form 4
2026-02-27ZMAward / grant4,8454,845Form 4
2026-01-09ZMWithheld for tax10,661143,750Form 4
2026-01-09ZMOption exercise20,752186,765Form 4
2026-01-09ZMOption exercise20,752154,411Form 4
2025-12-09ZMWithheld for tax3,571136,254Form 4
2025-12-09ZMOption exercise4,22312,671Form 4
2025-12-09ZMOption exercise2,8078,421Form 4
2025-12-09ZMOption exercise7,030139,825Form 4
2025-10-09ZMWithheld for tax10,538140,455Form 4
2025-10-09ZMOption exercise20,751207,517Form 4
2025-10-09ZMOption exercise20,751150,993Form 4
2025-09-09ZMWithheld for tax3,571132,837Form 4
2025-09-09ZMOption exercise4,22416,894Form 4
2025-09-09ZMOption exercise2,80711,228Form 4
2025-09-09ZMOption exercise7,031136,408Form 4
2025-07-09ZMWithheld for tax10,538137,038Form 4
2025-07-09ZMOption exercise20,752147,576Form 4
2025-07-09ZMOption exercise20,752228,268Form 4
2025-06-09ZMWithheld for tax3,571128,988Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.