Insider transactions

David L Sze

CIK 1339221 · last filed 2026-07-02

David L Sze is a corporate insider who has filed 117 SEC Form 4 insider transactions across 4 companies since 2011. The most recent filing, for NXDR, was dated Jul 2, 2026. Across all open-market trades the lifetime net is −$153.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $122.7M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$122.73M

Companies

4

Total Filings

117

Lifetime Open-Market Net

-$153.30M

Charts

Trading activity, where the exposure sits, and each trade against the stock price.

Filer Profile

Reported Address
GREYLOCK
880 WINTER STREET SUITE 300
WALTHAM, MA 02451
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
NXDR Director 188,405 $2.45 $461.6K $0 4 2026-07-02
Nextdoor Holdings, Inc. (KIND) Delisted Director 456,806 $1.89 $863.4K $39.15M 18 2025-06-12
LINKEDIN CORP (LNKD) Delisted Director 31,546 — — -$187.67M 78 2016-12-09
P Director 940,151 $130.05 $122.27M -$4.79M 17 2015-05-29

Recent Filings

117 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-07-02 NXDR Exer (M) +6,536 $0 EDGAR
2026-06-11 NXDR Mixed +106,707 $0 EDGAR
2026-04-02 NXDR Exer (M) +6,535 $0 EDGAR
2026-03-18 NXDR Grant (A) — $0 EDGAR
2025-06-12 Nextdoor Holdings, Inc. (KIND) Delisted Mixed +68,627 $0 EDGAR
2024-07-30 Nextdoor Holdings, Inc. (KIND) Delisted Grant (A) — $0 EDGAR
2024-06-05 Nextdoor Holdings, Inc. (KIND) Delisted Grant (A) — $0 EDGAR
2024-05-03 Nextdoor Holdings, Inc. (KIND) Delisted Grant (A) — $0 EDGAR
2024-04-04 Nextdoor Holdings, Inc. (KIND) Delisted Grant (A) — $0 EDGAR
2024-03-05 Nextdoor Holdings, Inc. (KIND) Delisted Grant (A) — $0 EDGAR
Showing 1–10 of 117
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.