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Markus Sieger

CIK 1337143 · last filed 2026-01-30

Markus Sieger is a corporate insider who has filed 47 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing shows the insider was granted $37.5K of RFL on Jan 30, 2026. Across all open-market trades the lifetime net is +$329.8K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $562.5K across reported positions. 3 SEC filings were submitted jointly with Rafael Holdings, Inc.

"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

$562.5K

Companies

4

Total Filings

47

Lifetime Open-Market Net

$329.8K

Filer Profile

Reported Address
BEUTSTWEG 12
CH-8032
ZURICH, V8 000000000
Related Filers
Rafael Holdings, Inc. — 3 joint filings, latest 2026-01-30
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
RFL Director 219,710 $2.56 $562.5K $0 1 2026-01-30
Rafael Holdings, Inc. (RFL.WS) Delisted Director 190,182 $0.01 $2.7K $0 1 2025-05-29
Cyclo Therapeutics, Inc. (CYTHW) Delisted Director 440,260 $0.03 $14.1K $214.4K 23 2025-03-03
CENTRAL EUROPEAN DISTRIBUTION CORP (CEDC) Delisted Director 17,500 — — $115.4K 8 2011-08-22

Recent Filings

47 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
2026-01-30 RFL Grant (A) +29,528 $37.5K EDGAR
2025-05-29 Rafael Holdings, Inc. (RFL.WS) Delisted Exer (X) +35,000 $44.8K EDGAR
2025-03-03 Cyclo Therapeutics, Inc. (CYTHW) Delisted Grant (A) +58,138 $0 EDGAR
2024-11-18 Cyclo Therapeutics, Inc. (CYTHW) Delisted Grant (A) +35,022 $0 EDGAR
2024-08-20 Cyclo Therapeutics, Inc. (CYTHW) Delisted Grant (A) +18,354 $0 EDGAR
2024-06-05 Cyclo Therapeutics, Inc. (CYTHW) Delisted Grant (A) +18,067 $0 EDGAR
2024-02-15 Cyclo Therapeutics, Inc. (CYTHW) Delisted Grant (A) +14,004 $0 EDGAR
2023-11-30 Cyclo Therapeutics, Inc. (CYTHW) Delisted Grant (A) +16,512 $0 EDGAR
2023-10-23 Cyclo Therapeutics, Inc. (CYTHW) Delisted Mixed +59,881 $42.5K EDGAR
2023-08-22 Cyclo Therapeutics, Inc. (CYTHW) Delisted Grant (A) +16,269 $0 EDGAR
Showing 1–10 of 47
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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.