Knopper Douglas S

Director · MGNI

As of 2026-09-16, Knopper Douglas S has 5 Form 4 transactions on record across 1 company — 4 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.

Reconstructed holdings

Direct: $2.1MIndirect: $0$2.1Mas of 2026-09-16
  • Direct $2.1M
  • Indirect $0
MGNIdirect88,473 sh$2.1M

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

MGNI · 5 trades
2026-08-06: Sale, 37,337 sh ($848K)2026-06-16: Sale, 37,337 sh ($676K)2026-06-10: Sale, 10,766 sh ($169K)2026-06-08: Award / grant, 13,798 sh ($0)2025-06-05: Award / grant, 10,766 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-06MGNISale37,337 @ $22.72$848K−29.7% of holding88,473Form 4
2026-06-16MGNISale37,337 @ $18.10$676K−22.9% of holding125,810Form 4
2026-06-10MGNISale10,766 @ $15.73$169K−6.2% of holding163,147Form 4
2 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-08MGNIAward / grant13,798173,913Form 4
2025-06-05MGNIAward / grant10,766160,115Form 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.