Michael Holder

CIK 1515140 · Chief Financial Officer · last filed 2026-06-03

Michael Holder is a Chief Financial Officer who has filed 15 SEC Form 4 insider transactions across 3 companies since 2021. The most recent filing, for MDXH, was dated Jun 3, 2026. Current disclosed insider exposure totals $247.8K 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

$247.8K

Companies

3

Total Filings

15

Lifetime Open-Market Net

$0

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
MDXH Director $0.54 $0 1 2026-06-03
CTKB Director 16,721 $3.96 $66.2K $0 10 2026-05-20
RCEL Chief Financial Officer 46,450 $3.91 $181.6K $0 4 2022-07-06

Recent Filings

15 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2026-06-03 MDXH Grant (A) $0 EDGAR
2026-05-20 CTKB Exer (M) +1,454 $0 EDGAR
2026-03-12 CTKB Exer (M) +2,908 $0 EDGAR
2025-11-20 CTKB Exer (M) +2,181 $0 EDGAR
2025-08-20 CTKB Exer (M) +2,181 $0 EDGAR
2025-06-20 CTKB Grant (A) $0 EDGAR
2025-05-21 CTKB Exer (M) +1,454 $0 EDGAR
2025-03-12 CTKB Exer (M) +2,908 $0 EDGAR
2024-11-20 CTKB Exer (M) +2,181 $0 EDGAR
2024-08-21 CTKB Exer (M) +1,454 $0 EDGAR
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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.