Herndon Mark

8 Form 4 · free tier: 48h delay

Recent Form 4 slice from EDGAR — up to 30 filings (not a full archive).

For informational purposes only. Not investment advice. Data is aggregated from public SEC and congressional disclosures. Nothing on this site is a recommendation to buy or sell any security. Public disclosure of a trade is not evidence of wrongdoing or insider trading.

Data may be delayed — SEC EDGAR temporarily unavailable. Showing the last successfully cached results.

Recent Form 4 trades

Open-market purchases and sales

8 tx · 8 groups

Horizon Kinetics Holding Corp

HKHC · Trade · Aug 20, 2026 · Filed · Aug 20, 2026

$5,350

200 sh

Buy

Horizon Kinetics Holding Corp

HKHC · Trade · Aug 19, 2026 · Filed · Aug 20, 2026

$1,325

50 sh

Buy

Horizon Kinetics Holding Corp

HKHC · Trade · May 20, 2026 · Filed · May 21, 2026

$2,785

100 sh

Buy

Horizon Kinetics Holding Corp

HKHC · Trade · Mar 18, 2026 · Filed · Mar 19, 2026

$2,642

80 sh

Buy

Horizon Kinetics Holding Corp

HKHC · Trade · Nov 20, 2025 · Filed · Nov 21, 2025

$2,900

100 sh

Buy

Horizon Kinetics Holding Corp

HKHC · Trade · Jun 4, 2025 · Filed · Jun 5, 2025

$804

20 sh

Buy

SAFEGUARD SCIENTIFICS INC

SFE · Trade · May 6, 2020 · Filed · May 7, 2020

$12,500

2,000 sh

Buy

SAFEGUARD SCIENTIFICS INC

SFE · Trade · Dec 7, 2018 · Filed · Dec 10, 2018 · filed 3 days after trade

$94,400

10,000 sh

Buy