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Hersch Klaff

CIK 1654577 · last filed 2023-03-01

Hersch Klaff is a corporate insider who has filed 16 SEC Form 4 insider transactions across 3 companies since 2020. The most recent filing, for ACI, was dated Mar 1, 2023. Across all open-market trades the lifetime net is −$109.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $821.6M 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

$821.61M

Companies

3

Total Filings

16

Lifetime Open-Market Net

-$109.16M

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
ACI Director 58,146,171 $14.13 $821.61M -$109.16M 14 2023-03-01
Energy Vault Holdings, Inc. (NXU.WS) Delisted Director 250,000 $1.35 $337.5K $0 1 2022-02-11
Energy Vault Holdings, Inc. (NXU.U) Delisted Director — $11.91 — $0 1 2021-02-08

Recent Filings

16 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
2023-03-01 ACI — — $0 EDGAR
2023-02-14 ACI Grant (A) — $0 EDGAR
2023-01-24 ACI Grant (A) — $0 EDGAR
2022-11-15 ACI Grant (A) — $0 EDGAR
2022-08-11 ACI Grant (A) — $0 EDGAR
2022-05-16 ACI Grant (A) — $0 EDGAR
2022-03-02 ACI Mixed +7,870 $0 EDGAR
2022-02-14 ACI Grant (A) — $0 EDGAR
2022-02-11 Energy Vault Holdings, Inc. (NXU.WS) Delisted Mixed +968,222 $2.50M EDGAR
2021-11-16 ACI Grant (A) — $0 EDGAR
Showing 1–10 of 16
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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.