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John Mazarakis

CIK 1867660 · Executive Chairman · last filed 2026-08-28

John Mazarakis is an Executive Chairman who has filed 20 SEC Form 4 insider transactions across 2 companies since 2021. The most recent filing shows the insider bought $508.9K of REFI on Aug 28, 2026. Across all open-market trades the lifetime net is +$4.5M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $35.8M 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

$35.79M

Companies

2

Total Filings

20

Lifetime Open-Market Net

$4.49M

Filer Profile

Reported Address
C/O CHICAGO ATLANTIC REAL ESTATE FINANCE
420 NORTH WABASH AVENUE, SUITE 500
CHICAGO, IL 60611
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
REFI Executive Chairman 550,556 $10.73 $5.91M $3.93M 16 2026-08-28
LIEN 10%+ Owner 2,947,204 $10.14 $29.88M $566.4K 1 2026-08-19

Recent Filings

20 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
2026-08-28 REFI Buy (P) +47,711 $508.9K EDGAR
2026-08-25 REFI Buy (P) +145 $1.5K EDGAR
2026-08-19 LIEN Buy (P) +60,000 $566.4K EDGAR
2026-08-19 REFI Buy (P) +25,000 $256.3K EDGAR
2026-04-22 REFI Grant (A) +37,099 $0 EDGAR
2025-12-30 — Mixed +6,633,737 -$2.77M
2025-10-16 REFI Buy (P) +8,000 $102.0K EDGAR
2025-10-02 REFI Buy (P) +7,500 $93.2K EDGAR
2025-05-13 — Grant (A) — $0
2025-04-03 REFI Grant (A) +28,398 $0 EDGAR
Showing 1–10 of 20
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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.