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Hampstead Park Capital Management, LLC

CIK 1773816 · last filed 2026-08-04

Hampstead Park Capital Management, LLC is a corporate insider who has filed 16 SEC Form 4 insider transactions across 1 company since 2019. The most recent filing shows the insider was granted $83.8K of QRHC on Aug 4, 2026. Across all open-market trades the lifetime net is +$2.7M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $4.1M across reported positions. The firm reports its address in Old Greenwich, CT. 35 SEC filings were submitted jointly with DANIEL M. FRIEDBERG.

"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

$4.05M

Companies

1

Total Filings

16

Lifetime Open-Market Net

$2.68M

Filer Profile

Reported Address
20 BALLWOOD ROAD
OLD GREENWICH, CT 06870
Phone
(203) 344-1227
State of Incorporation
DE
Related Filers
DANIEL M. FRIEDBERG — 35 joint filings, latest 2026-09-02
Hampstead Park Environmental Services Investment Fund LLC — 35 joint filings, latest 2026-09-02
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
QRHC 10%+ Owner 2,959,241 $1.37 $4.05M $2.68M 15 2026-08-04

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
2026-08-04 QRHC Grant (A) +65,952 $83.8K EDGAR
2026-06-02 QRHC Grant (A) +70,983 $83.8K EDGAR
2026-05-04 QRHC Grant (A) +39,867 $45.0K EDGAR
2025-12-02 QRHC Grant (A) +23,961 $45.0K EDGAR
2025-03-20 QRHC Buy (P) +37,722 $111.3K EDGAR
2022-07-28 QRHC Buy (P) +9,726 $38.5K EDGAR
2022-07-15 QRHC Buy (P) +1,914 $7.6K EDGAR
2022-07-08 QRHC Buy (P) +5,547 $22.0K EDGAR
2022-06-29 QRHC Buy (P) +5,568 $22.0K EDGAR
2022-06-23 QRHC Buy (P) +17,946 $70.1K 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.