Latest filingSep 03, 2026Most recent Form 4
HKHC
Horizon Kinetics Holding Corp
OTCFinancialsInvestment Advice
Insider activity for last month from 08/04 to 09/04. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$10.0M9 buys
Total selling$00 sells
Net open-market+$10.0M7 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period9transactions
- P · Open-market buys · dominant9 · 100%
Activity by reported role
A joint filing can contribute to multiple roles10transactions
- Director · dominant7 · 70%
- Chief financial officer2 · 20%
- Unknown1 · 10%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (7)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeBrennan Alice CCommon Stock · Direct
2,000Sep 02, 2026
Herndon MarkCommon Stock · Direct
550Aug 20, 2026
Rosenthal Brent DCommon Stock · Direct
4,450Aug 24, 2026
Maran Partners Fund, LPCommon Stock · Direct
10,000Aug 26, 2026
Maran Capital Management, LLCCommon Stock · Direct
10,000Aug 26, 2026
Maran Partners GP, LLCCommon Stock · Direct
10,000Aug 26, 2026
Roller Daniel JCommon Stock · Direct
10,000Aug 26, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 04 → Sep 04
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Top insiders
By absolute net value across the selected period- RD+$54.0k
- BC+$15.8k
- HM+$6.7k
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
HKHC transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| HKHC | Brennan Alice C | DIR | buy | 200 | $518k | P | — | — | 09/03 | 09/02 |
| HKHC | Brennan Alice C | DIR | buy | 200 | $524k | P | — | 08/31 | 08/28 | |
| HKHC | Brennan Alice C | DIR | buy | 200 | $537k | P | — | 08/25 | 08/24 | |
| HKHC | Rosenthal Brent D | DIR | buy | 2.00k | $5.40M | P | — | 08/25 | 08/24 | |
| HKHC | Herndon Mark | CFO | buy | 200 | $535k | P | — | 08/20 | 08/20 | |
| HKHC | Herndon Mark | CFO | buy | 50 | $132k | P | — | 08/20 | 08/19 |
Horizon Kinetics Holding Corp Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Horizon Kinetics Holding Corp?
Brennan Alice C, Maran Capital Management, LLC, Maran Partners Fund, LP, Maran Partners GP, LLC, Roller Daniel J, Rosenthal Brent D, Herndon Mark.
When was the latest reported open-market purchase?
Brennan Alice C reported a buy on Sep 02, 2026 valued at $518k. Read the SEC filing.
When was the latest reported open-market sale?
No code-S sale is available for this period.
What is the recent purchase and sale balance?
Net open-market buying in the selected period was $100,273.00. This describes filed transactions, not a bullish rating.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.