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HKHC · Horizon Kinetics Holding Corp

Everything on this page is public record — SEC Form 4 filings and congressional disclosures — alongside any INSIDER SCANNER research case for this company.

Open-market buys10
Open-market sells0
Total purchased$105,264
Unique insiders buying5
Most senior buyerCFO
Avg price paid$26.72
Research cases0
Last filing2026-09-18

Average price paid is weighted by shares, so a large purchase counts for more than a small one. It is what insiders reported paying, not a target or a fair value.

Insider flow: Buying only — a count of disclosed transactions, not a rating or a recommendation.

Insider transaction timeline

Every reported transaction, positioned by trade date. Purchases sit above the axis, sales below; circle area is proportional to dollar value. No share-price line is drawn — this feed carries transaction prices only, and a price history inferred from them would imply market data the filings do not contain.

Open-market purchase Open-market sale
2026-08-19 — Herndon Mark · bought 50 @ $26.50 2026-08-20 — Herndon Mark · bought 200 @ $26.75 2026-08-24 — Rosenthal Brent D · bought 2,000 @ $27.00 2026-08-24 — Brennan Alice C · bought 200 @ $26.87 2026-08-25 — Brennan Alice C · bought 200 @ $26.75 2026-08-26 — Maran Partners Fund, LP · bought 500 @ $26.50 2026-08-27 — Brennan Alice C · bought 200 @ $26.00 2026-08-28 — Brennan Alice C · bought 200 @ $26.20 2026-09-02 — Brennan Alice C · bought 200 @ $25.92 2026-09-18 — Nagelberg Allison · bought 190 @ $26.27
2026-08-192026-09-18

Insider cost basis

Share-weighted average price across 10 reported purchases, with the full range of prices paid. Purchases only — averaging a sale into an "insider cost" would describe a price nobody paid.

$25.92 $27.00
$26.72 weighted average insider purchase price

Insider participation

One row per insider, one cell per reported transaction, shaded by value. Repeat buying and activity clustered in time are visible at a glance.

Brennan Alice C Director
Herndon Mark Chief Financial Officer
Rosenthal Brent D Director
Maran Partners Fund, LP Other
Nagelberg Allison Director
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The analysis built on top of these filings

The filings above are public record and stay public here. What an account adds for $HKHC is the reading of them — and for this company, that is what the list below says it is, no more.

  • Insider cost basisShare-weighted average price paid across the 10 reported purchases, with the full range, against the current price.
  • Insider participationWho bought, how often, and how the buying is distributed across the people filing — one person repeating is not several agreeing.
  • Transaction timelineThe [{'transaction_date': '2026-09-18', 'insider_name': 'Nagelberg Allison', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 190.0, 'price': 26.27, 'value': 4991.3, 'is_buy': True}, {'transaction_date': '2026-09-02', 'insider_name': 'Brennan Alice C', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 200.0, 'price': 25.92, 'value': 5184.0, 'is_buy': True}, {'transaction_date': '2026-08-28', 'insider_name': 'Brennan Alice C', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 200.0, 'price': 26.2, 'value': 5240.0, 'is_buy': True}, {'transaction_date': '2026-08-27', 'insider_name': 'Brennan Alice C', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 200.0, 'price': 26.0, 'value': 5200.0, 'is_buy': True}, {'transaction_date': '2026-08-26', 'insider_name': 'Maran Partners Fund, LP', 'insider_title': 'Other', 'transaction_type': 'Open-market buy', 'shares': 500.0, 'price': 26.5, 'value': 13250.0, 'is_buy': True}, {'transaction_date': '2026-08-25', 'insider_name': 'Brennan Alice C', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 200.0, 'price': 26.75, 'value': 5350.0, 'is_buy': True}, {'transaction_date': '2026-08-24', 'insider_name': 'Rosenthal Brent D', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 2000.0, 'price': 27.0, 'value': 54000.0, 'is_buy': True}, {'transaction_date': '2026-08-24', 'insider_name': 'Brennan Alice C', 'insider_title': 'Director', 'transaction_type': 'Open-market buy', 'shares': 200.0, 'price': 26.87, 'value': 5374.0, 'is_buy': True}, {'transaction_date': '2026-08-20', 'insider_name': 'Herndon Mark', 'insider_title': 'Chief Financial Officer', 'transaction_type': 'Open-market buy', 'shares': 200.0, 'price': 26.75, 'value': 5350.0, 'is_buy': True}, {'transaction_date': '2026-08-19', 'insider_name': 'Herndon Mark', 'insider_title': 'Chief Financial Officer', 'transaction_type': 'Open-market buy', 'shares': 50.0, 'price': 26.5, 'value': 1325.0, 'is_buy': True}] reported transactions plotted over the window rather than listed, so concentration is visible.

Not available for HKHC today: no research case — nothing here has cleared the scoring threshold. Both appear on this page on their own if that changes.

A free account opens all of it.

Not financial advice. This page reports public filings and past research output. It is not a recommendation to buy or sell, and no price target here is a prediction. Trade at your own risk.