Snapshot date: 2026-10-18 · Built: 2026-10-18T22:16:26+00:00 · Publication status: REVIEW

COMPANY RESEARCH

Horizon Kinetics Holding Corp

HKHC · United States · Financial Services

INSIDER SIGNAL

Insider activity score：74.6 / 100

5 insiders · 12 purchase events · $128k net purchases

US #96 · United States #96

WHY THIS SIGNAL?

Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+35.0 / 35

How many distinct insiders bought in the cluster

Purchase size+8.5 / 25

Purchase value relative to company size and liquidity

Role+5.0 / 20

The seniority and relevance of participating insiders

Recency+6.1 / 10

How recently the purchases occurred

Conviction+10.0 / 10

How clearly buying stands out from other activity

What is holding the score back?

⚠ Purchase size is modest relative to the model scale
⚠ Insider role contributes less on the current role scale
⚠ Purchase activity is becoming less recent
✓ Broad buyer cluster · 4+ distinct filers

The role contribution follows the US model's seniority ladder.

BUYING PROFILE

12 events · 5 insiders · 180d

Cluster 92%Repeat 0%Independent 8%Large 0%

Percentages are mutually exclusive and sum to 100%.

Buying concentration

58%

Largest buyer：Rosenthal Brent D · 73k USD
Gross qualified purchase transaction-line value：128k USD

The headline $ total is net buying for the screen; this module uses gross qualified purchase transaction-line values in the filing currency, so the amounts can differ. The current 15-day buyer-breadth input counts distinct buyers; value concentration is disclosed separately here.

This is a ranking under the current US screening rules—not a probability of gain, return forecast, or buy recommendation.

Key purchase quotes (filing currency)

Filer	Price per unit	Trade date
Nagelberg Allison	26.27 USD	Sep 18, 2026
Brennan Alice C	25.92 USD	Sep 2, 2026
Rosenthal Brent D	27 USD	Aug 24, 2026

Model details

Cluster breakdown (does not change the score)

15-day buyer breadth (count): 4 distinct reported filers
Peak time window: 2026-08-19 to 2026-09-02
Current breadth input: 1.000 (capped at 4+ buyers)
Buyer independence: Not yet measured; related-party fields are not cross-market comparable

What the filings show

🟢 Recent eligible purchase
Nagelberg Allison · 5k USD · Price 26.27 USD · Sep 18, 2026
🟢 PDMR purchase
Brennan Alice C · 5k USD · Price 25.92 USD · Sep 2, 2026
🟢 PDMR purchase
Rosenthal Brent D · 54k USD · Price 27 USD · Aug 24, 2026
🟡 9 remaining qualified transaction line(s) across 8 disclosure(s)

Insider vs stock price

10 purchase day(s), 12 purchase line(s) in the 180-day window.

Daily close (USD)Day with an insider purchaseTwo or more insiders the same day

Markers sit on the closing price of the transaction day. They show when insiders traded, not the price they paid or received. "Since" compares that day's close with the last close shown; it is what happened at this company, not a forecast.

If you had followed the purchase

Each row starts on the first close on or after the day a purchase was made public, the earliest a reader could have acted, and ends on the last close shown above.

Amount put in (USD)

Made public	Insiders	In this stock, now	In the median peer stock, now	Difference
2026-05-21	2	745 −25.5%	925 −7.5%	−180 −18.0 pts
2026-08-20	1	775 −22.5%	919 −8.1%	−144 −14.4 pts
2026-08-25	2	766 −23.4%	912 −8.8%	−146 −14.6 pts
2026-08-26	1	787 −21.3%	914 −8.6%	−128 −12.8 pts
2026-08-27	1	787 −21.3%	913 −8.7%	−126 −12.6 pts
2026-08-28	1	784 −21.6%	920 −8.0%	−136 −13.6 pts
2026-08-31	1	788 −21.2%	926 −7.4%	−138 −13.8 pts
2026-09-03	1	784 −21.6%	922 −7.8%	−138 −13.8 pts
2026-09-22	1	827 −17.3%	960 −4.0%	−133 −13.3 pts

0 of 9 disclosure day(s) ended ahead of the median peer stock.

Close to close, before costs, taxes, dividends and currency moves. The peer is the median of the other stocks on the same exchange for which this site holds prices (1090 here), not an index. This is what happened, not a forecast: across all purchases on this site the typical gap is close to zero.

Insider timeline

4 insiders bought within 14 days, 20 Aug to 2 Sep: 3 Board member, 1 CFO. 1 more bought afterwards. The share closed at 26.45 on the first of those days and at 20.49 most recently (−22.5%). That week 218 companies across United States disclosed insider purchases, more than in 88% of the last 26 weeks: insiders often buy together when a closed period ends, so the timing alone says less than it seems.

Tap an item for what it means.

●A purchase: the bigger the dot, the more was bought

Each dot is one insider's purchases on one day. The dot's area follows the amount: the largest purchase here gets the largest dot. Hold the pointer over a dot to see the date and the amount.

▮Purple band: several insiders bought within 15 days

The band marks the stretch with the most different buyers: at most 15 days long and at least two people. Here it is 20 Aug – 2 Sep, with 4 insiders. Only the strongest stretch is marked. Several people deciding the same thing is harder to explain by one person's private reasons, but insiders often buy together just after a closed period ends, so compare it with the grey weekly bars.

Blue line: this share's price, −20.1% over these six months

The closing price of each day, from 25.66 on 2026-04-21 to 20.49 on 2026-10-09. The line has no scale; read it for high and low: a dot on a low stretch was bought cheaply, a dot on a high stretch was not.

Dashed line: the typical stock on the same exchange, −11.0%

Taken from the 1230 other stocks on the same exchange that this site holds prices for. Each is measured from the first day of the window, and every day the middle one is drawn. It starts where the blue line starts, so the gap between the two is the difference: this share −20.1%, the typical one −11.0%, 9.1 points behind. It is not an index and not a comparison within one industry.

▂Grey bars: companies across United States disclosing purchases each week

A taller bar is a week in which more companies disclosed insider purchases. The purple bar is the week of the band above: 218 companies, number 3 of the last 26 weeks. If that week was a peak anyway, buying together is less special than it looks.

This company: insiders buying per month, last 12 months

4Nov

2Dec

Jan

Feb

4Mar

Apr

2May

Jun

Jul

4Aug

2Sep

Oct

Darker bars are inside the 180-day window above.

Who traded

Insider	Role	Purchases	Sales	Bought	First purchase	Share price since
Herndon Mark	CFO	3	—	9.5k USD	2026-05-20	−26.4%
Rosenthal Brent D	Board member	2	—	73.5k USD	2026-05-20	−26.4%
Brennan Alice C	Board member	5	—	26.3k USD	2026-08-24	−23.7%
Maran Capital Management, LLC; Maran Partners Fund, LP; Maran Partners GP, LLC; Roller Daniel J	Board member	1	—	13.2k USD	2026-08-26	−21.3%
Nagelberg Allison	Board member	1	—	5.0k USD	2026-09-18	−20.9%

Why this score? · Model details

Priority = 100 × Σ(fixed weight × 0–1 rule-based input)

Factor	Weight	This company input	Point contribution
15-day buyer breadth (count)	35%	1.000	35.0
Qualified-buy size	25%	0.340	8.5
Role informativeness (inverted)	20%	0.750	15.0
Recency	10%	0.607	6.1
Buy/sell conviction	10%	1.000	10.0

This is a heuristic ordering under the current rules, not a calibrated return forecast. It explains why candidates rank differently; the public-filing evidence and data limits are shown below.

BULL VS BEAR

Two readings of this buying

The same filings, read two ways. Each line is a fact stored for this company with the number behind it, and appears only when that number crosses a fixed threshold. Neither side is a forecast and no winner is declared.

Where the evidence comes from

The two kinds of evidence disagree: the purchases themselves carry bull lines (several insiders together), while share price and trading argue against (price down over six months, price trails its sector). No data is held for: company results, company actions.

The insider purchases themselvesBullseveral insiders together Bearusual level for this company, buyer's past purchases trailed the benchmark7 checked, under the threshold
Share price and tradingBearprice down over six months, price trails its sector
Short sellers1 checked, under the threshold
Company results2 missing
Company actionsno data held

Bull case · the buying is informative

4 insiders bought within 15 days (2026-08-19 to 2026-09-02). Several people reaching the same decision at the same time is hard to put down to one person's circumstances.

Bear case · discount it

Buying at this level is normal here: 5 insiders bought in the previous 180 days and 5 in this one.
Share price and tradingThe share price is down 30% over six months (three months −28%, one month −23%) and stands 41% below its 52-week high. Insiders have bought into a fall the market has not reversed.
Share price and tradingOver three months the share price changed −28% and the median of 143 Financial Services companies changed −1.2%: 27 points behind. The market has marked this company down against its own sector.
The 6 earlier purchases by Rosenthal Brent D trailed S&P 500 ETF (SPY adjusted close) by a median 6.5% over the following 60 trading days.

Evidence still missing

The company's market value is not captured, so the purchases cannot be stated as a share of the business or of its trading volume.
No earnings, margin or cash-flow figures are captured for this company. The latest annual and interim reports are where to check whether the business is improving or deteriorating.

Checked and under the threshold: 8, 1 close to it

Bull11 of 11 purchase filings state the shares held before and after. The largest addition to an existing holding took it from 300 to 550 shares (+83%). Counted for the bull side from +100%, for the bear side below +1%. close to the threshold
BearThe largest buyer accounts for 58% of the value bought. Counted for the bear side from 80%.
EitherNet purchases of $128k in 180 days. Bull from $1.0M, bear when all purchases total under $25k.
BearNo insider sale is recorded in the same 180 days.
EitherThe latest purchase is 30 days old. Bull up to 14 days, bear from 90.
BearNone of the 11 purchase filings ticks Form 4's 10b5-1 box.
BearNo insider filing in the last 180 days opened a hedge on this stock.
BearFINRA short interest on 2026-09-30 equals 1.0 days of average trading volume and <0.01% of the 18,635,321 shares outstanding, down 87% from the previous report. Counted for the bear side from 10 days, or from 10% of the shares outstanding.

Both columns arrange stored facts only. They do not change the insider score or the ranking and are not investment advice.

Signal history

74.6 / 100

Latest recorded score

↑ +30.8 ptssince the first recorded snapshot on 2026-09-25; 23 calendar days observed

Recorded snapshots: 18
First snapshot: 2026-09-25

There is not yet a 30-calendar-day comparison; earlier scores are not reconstructed. These are raw signal scores saved when each full scoring run completed. They describe changes in research ranking, not price performance or returns.

Why did it change?

Less than 30 days of comparable history is available, so factor movement is not yet decomposed.

Signal score history

Fixed 0–100 scale; dates are spaced by calendar time.

Recent recorded points

Sep 25, 202643.8
Oct 2, 202664.3
Oct 6, 202663.9
Oct 13, 202675.1
Oct 18, 202674.6

View all recorded scores

Snapshot date	Signal score
2026-09-25	43.8
2026-09-29	64.7
2026-09-30	64.6
2026-10-01	64.5
2026-10-02	64.3
2026-10-03	64.2
2026-10-04	64.1
2026-10-05	64.0
2026-10-06	63.9
2026-10-07	63.8
2026-10-08	81.0
2026-10-09	80.6
2026-10-12	75.3
2026-10-13	75.1
2026-10-14	75.0
2026-10-15	74.9
2026-10-16	74.7
2026-10-18	74.6

Sector context

Financial Services

Buying breadth: 4.1% (29 / 701 issuers)
Sector rank: #7 / 13

This is sector-level research context. It does not affect the Insider Signal or ranking.

View US sector research →

Insider profile outcomes

Historical performance following insider filings. The company role is translated below each name while preserving the original title.

Excess return = stock return − S&P 500 ETF (SPY adjusted close) return over the same period.
Hit rate = completed events with positive excess return ÷ total completed events.
Price coverage = valid point-in-time prices ÷ events mature enough for that period.
Returns start on the first shared trading session on or after publication.
Small-sample rule: n<5 is shown for transparency and is not scored.

Events are disclosure-level observations; related disclosures published on the same date may share a return path and may not be statistically independent. This research enrichment does not affect the insider score or ranking.

STAHL MURRAYCEO and CIO | Director,TenPercentOwner | President | President and CEO | President/Co-Portfolio Manager65 completed 20D event(s)

Period	Completed events	Price coverage	Hit rate	Median excess return	Average excess return	Worst excess return
5D	65Established evidence	11.9% (65/546)	52.3% (34/65)	+0.3%	+0.8%	-8.7%
20D	65Established evidence	11.9% (65/546)	13.8% (9/65)	-8.1%	-8.9%	-34.7%
60D	65Established evidence	11.9% (65/546)	29.2% (19/65)	-15.4%	-10.9%	-38.3%
120D	65Established evidence	11.9% (65/546)	18.5% (12/65)	-17.6%	-20.0%	-57.8%

First purchase in 12M

0/542

Large purchase ≥ $100k

4/546

Cluster buying · 15D

266/546

Buying the dip · ≥20% below prior 52W high

65/65

Routine / opportunistic

Not classifiable

Horizon Common IncTenPercentOwner47 completed 20D event(s)

Period	Completed events	Price coverage	Hit rate	Median excess return	Average excess return	Worst excess return
5D	47Established evidence	100.0% (47/47)	38.3% (18/47)	-0.5%	+0.2%	-8.7%
20D	47Established evidence	100.0% (47/47)	17.0% (8/47)	-8.1%	-9.1%	-34.7%
60D	47Established evidence	100.0% (47/47)	27.7% (13/47)	-18.9%	-11.4%	-38.3%
120D	47Established evidence	100.0% (47/47)	2.1% (1/47)	-23.2%	-27.0%	-57.8%

First purchase in 12M

0/46

Large purchase ≥ $100k

0/47

Cluster buying · 15D

46/47

Buying the dip · ≥20% below prior 52W high

47/47

Routine / opportunistic

Not classifiable

Rosenthal Brent DDirector7 completed 20D event(s)

Period	Completed events	Price coverage	Hit rate	Median excess return	Average excess return	Worst excess return
5D	7Developing evidence	70.0% (7/10)	42.9% (3/7)	-0.6%	+0.2%	-3.6%
20D	7Developing evidence	70.0% (7/10)	28.6% (2/7)	-4.5%	-8.3%	-32.1%
60D	6Developing evidence	66.7% (6/9)	33.3% (2/6)	-6.5%	-9.3%	-33.7%
120D	5Developing evidence	62.5% (5/8)	20.0% (1/5)	-12.7%	-15.6%	-36.5%

First purchase in 12M

0/8

Large purchase ≥ $100k

0/10

Cluster buying · 15D

7/10

Buying the dip · ≥20% below prior 52W high

7/7

Routine / opportunistic

Not classifiable

Signal outcomes

Calculated from immutable US ranking snapshots; excess return is stock return minus SPY return. Newly saved snapshots remain pending until each forward horizon matures. This never affects the US score.

Horizon	Status	Result
5D	9 completed	-10.7% median
20D	Awaiting maturity	—
60D	Awaiting maturity	—
120D	Awaiting maturity	—

Market context

PRICE PERFORMANCE

-22.7%

-28.4%

-30.5%

12M

-43.8%

VOLATILITY & LIQUIDITY

Volatility: 75.5%
Beta: —
Avg daily volume: $75,162.5

VALUATION

Market cap: —
P/E: —

FUNDAMENTALS

Profit margin: —
ROE: —
Industry: —

Prices to 11 Oct 2026: OpenBB/yfinance; volume from price cache (yfinance). It does not affect the insider score or rank.

Insiders' buying price vs the latest close

The latest close in the price history is more than a week old.

Buying size vs market trading

Complete price and volume history is not yet available.

Market-data coverage: 0 verified sessions · Latest session: — · Ratio status: Unavailable

Traded value is estimated as close × shares traded, in major currency units. Includes disclosed qualifying purchases; disclosures may lag. Contractual or planned acquisitions are not necessarily discretionary. Ratios describe relative trading size, not market participation or score contributions.

Latest news

News capture status: OK. Articles were retained for audit but none met the reader threshold.

Regulatory filings

Insider filing announcement · published 2026-09-22 · trade date 2026-09-18
Insider filing announcement · published 2026-09-03 · trade date 2026-09-02
Insider filing announcement · published 2026-08-31 · trade date 2026-08-28

Unfold all 36 filings

Insider filing announcement · published 2026-09-22 · trade date 2026-09-18
Insider filing announcement · published 2026-09-03 · trade date 2026-09-02
Insider filing announcement · published 2026-08-31 · trade date 2026-08-28
Insider filing announcement · published 2026-08-28 · trade date 2026-08-27
Insider filing announcement · published 2026-08-27 · trade date 2026-08-26
Insider filing announcement · published 2026-08-26 · trade date 2026-08-25
Insider filing announcement · published 2026-08-25 · trade date 2026-08-24
Insider filing announcement · published 2026-08-25 · trade date 2026-08-24
Insider filing announcement · published 2026-08-20 · trade date 2026-08-20
Insider filing announcement · published 2026-05-21 · trade date 2026-05-20
Insider filing announcement · published 2026-05-21 · trade date 2026-05-20
Insider filing announcement · published 2026-03-24 · trade date 2026-03-20
Insider filing announcement · published 2026-03-24 · trade date 2026-03-20
Insider filing announcement · published 2026-03-23 · trade date 2026-03-20
Insider filing announcement · published 2026-03-20 · trade date 2026-03-19
Insider filing announcement · published 2026-03-19 · trade date 2026-03-18
Insider filing announcement · published 2026-03-19 · trade date 2026-03-18
Insider filing announcement · published 2026-03-19 · trade date 2026-03-18
Insider filing announcement · published 2025-12-23 · trade date 2025-12-23
Insider filing announcement · published 2025-12-11 · trade date 2025-12-10
Insider filing announcement · published 2025-12-10 · trade date 2025-12-09
Insider filing announcement · published 2025-12-09 · trade date 2025-12-08
Insider filing announcement · published 2025-12-08 · trade date 2025-12-05
Insider filing announcement · published 2025-12-05 · trade date 2025-12-04
Insider filing announcement · published 2025-12-04 · trade date 2025-12-03
Insider filing announcement · published 2025-12-03 · trade date 2025-12-02
Insider filing announcement · published 2025-12-02 · trade date 2025-12-01
Insider filing announcement · published 2025-12-01 · trade date 2025-11-28
Insider filing announcement · published 2025-11-28 · trade date 2025-11-26
Insider filing announcement · published 2025-11-26 · trade date 2025-11-25
Insider filing announcement · published 2025-11-26 · trade date 2025-11-25
Insider filing announcement · published 2025-11-25 · trade date 2025-11-24
Insider filing announcement · published 2025-11-24 · trade date 2025-11-21
Insider filing announcement · published 2025-11-21 · trade date 2025-11-20
Insider filing announcement · published 2025-11-21 · trade date 2025-11-20
Insider filing announcement · published 2025-05-05 · trade date 2025-12-04

Results and insider purchases

Results (8-K)	Bought within 5 sessions	Bought within 20 sessions
2026-08-1316:30 ET · after the closeFirst session 2026-08-14	1 · $6.7KHerndon Mark	7 · $140.0KRosenthal Brent D; Brennan Alice C; Maran Capital Management, LLC
2026-05-1509:00 ET · before the open	2 · $22.3KRosenthal Brent D; Herndon Mark	2 · $22.3KRosenthal Brent D; Herndon Mark
2026-03-1216:00 ET · after the closeFirst session 2026-03-13	4 · $35.3KRosenthal Brent D; Horizon Common Inc; STAHL MURRAY	5 · $47.8KRosenthal Brent D; Horizon Common Inc; STAHL MURRAY
2025-11-1316:00 ET · after the closeFirst session 2025-11-14	3 · $4.2KHerndon Mark; Horizon Common Inc; STAHL MURRAY	4 · $32.1KHorizon Common Inc; STAHL MURRAY; Rosenthal Brent D

Results dates are the company's 8-K filings to the SEC under Item 2.02 (results of operations); one filed after the close counts from the next session. Purchases are open-market buys reported on Form 4 (code P), by trade date; a Form 4 can arrive two business days after the trade, so the latest days can still fill in. Facts only; this does not change the score or rank.

Ownership and trading-plan context

Direct / indirect ownership	Direct
10b5-1 filing evidence	Not declared in filing field
Evidence retrieved	2026-10-07T22:16:46+00:00

These are accession-level filing fields. Unavailable means the evidence was not fetched or parsed; it is never inferred as “No” and does not adjust the US score.

Filing evidence

These are underlying national-feed records from the 365-day window ending on the saved ranking snapshot. The score uses only the latest 180 days; older qualifying equity purchases remain visible for audit but do not enter the current score. The original filer, role, transaction classification, instrument, price, volume, value and source fields are retained. The first three rows are shown; remaining records can be unfolded for audit. Other transaction types are retained but excluded from the score.

Excluded transactions & classification

35 qualifying purchase disclosure(s) · 73 transaction line(s)

Dec 4, 2025Open market purchase

Horizon Common Inc · TenPercentOwner

Common Stock · 6.0 shares × 41.25 USD · 247.5 USD

Open filing

Nov 27, 2025Open market purchase

Horizon Common Inc · TenPercentOwner

Common Stock · 6.0 shares × 41.0 USD · 246.0 USD

Open filing

Dec 10, 2025Open market purchase

Horizon Common Inc; STAHL MURRAY · CEO and CIO

Common Stock · 12.0 shares × 27.0 USD · 324.0 USD

Open filing

Unfold all 70 remaining filing row(s)

Transaction date	Published	Filer	Role	Transaction	Instrument	Price (local currency)	Quote currency	Volume	Reported value (local currency)	Source
2025-12-10	2025-12-11	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	6.0	162.0 USD	Open filing
2025-12-10	2025-12-11	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	4.0	108.0 USD	Open filing
2025-12-09	2025-12-10	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	4.0	108.0 USD	Open filing
2025-12-09	2025-12-10	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	6.0	162.0 USD	Open filing
2025-12-09	2025-12-10	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	12.0	324.0 USD	Open filing
2025-12-08	2025-12-09	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	26.73 USD	USD	6.0	160.38 USD	Open filing
2025-12-08	2025-12-09	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	26.73 USD	USD	12.0	320.76 USD	Open filing
2025-12-08	2025-12-09	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	26.73 USD	USD	4.0	106.92 USD	Open filing
2025-12-05	2025-12-08	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.75 USD	USD	4.0	111.0 USD	Open filing
2025-12-05	2025-12-08	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.75 USD	USD	6.0	166.5 USD	Open filing
2025-12-05	2025-12-08	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.75 USD	USD	12.0	333.0 USD	Open filing
2025-12-04	2025-12-05	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.75 USD	USD	12.0	333.0 USD	Open filing
2025-12-04	2025-12-05	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.75 USD	USD	6.0	166.5 USD	Open filing
2025-12-04	2025-12-05	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.75 USD	USD	4.0	111.0 USD	Open filing
2025-12-03	2025-12-04	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	12.0	324.0 USD	Open filing
2025-12-03	2025-12-04	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	4.0	108.0 USD	Open filing
2025-12-03	2025-12-04	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	6.0	162.0 USD	Open filing
2025-12-02	2025-12-03	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.23 USD	USD	6.0	163.38 USD	Open filing
2025-12-02	2025-12-03	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.23 USD	USD	12.0	326.76 USD	Open filing
2025-12-02	2025-12-03	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.23 USD	USD	4.0	108.92 USD	Open filing
2025-12-01	2025-12-02	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	12.0	324.0 USD	Open filing
2025-12-01	2025-12-02	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	4.0	108.0 USD	Open filing
2025-12-01	2025-12-02	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	6.0	162.0 USD	Open filing
2025-11-28	2025-12-01	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.23 USD	USD	6.0	163.38 USD	Open filing
2025-11-28	2025-12-01	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.23 USD	USD	12.0	326.76 USD	Open filing
2025-11-28	2025-12-01	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.23 USD	USD	4.0	108.92 USD	Open filing
2025-11-26	2025-11-28	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.23 USD	USD	12.0	326.76 USD	Open filing
2025-11-26	2025-11-28	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.23 USD	USD	8.0	217.84 USD	Open filing
2025-11-26	2025-11-28	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.23 USD	USD	4.0	108.92 USD	Open filing
2025-11-25	2025-11-26	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	8.0	216.0 USD	Open filing
2025-11-25	2025-11-26	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	12.0	324.0 USD	Open filing
2025-11-25	2025-11-26	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.0 USD	USD	4.0	108.0 USD	Open filing
2025-11-25	2025-11-26	Rosenthal Brent D	Director	Open market purchase	Common Stock	27.28 USD	USD	300.0	8184.0 USD	Open filing
2025-11-24	2025-11-25	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	28.0 USD	USD	4.0	112.0 USD	Open filing
2025-11-24	2025-11-25	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	28.0 USD	USD	12.0	336.0 USD	Open filing
2025-11-24	2025-11-25	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	28.0 USD	USD	8.0	224.0 USD	Open filing
2025-11-21	2025-11-24	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	28.25 USD	USD	4.0	113.0 USD	Open filing
2025-11-21	2025-11-24	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	28.25 USD	USD	9.0	254.25 USD	Open filing
2025-11-21	2025-11-24	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	28.25 USD	USD	12.0	339.0 USD	Open filing
2025-11-20	2025-11-21	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.5 USD	USD	4.0	110.0 USD	Open filing
2025-11-20	2025-11-21	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.5 USD	USD	9.0	247.5 USD	Open filing
2025-11-20	2025-11-21	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	27.5 USD	USD	11.0	302.5 USD	Open filing
2025-11-20	2025-11-21	Herndon Mark	Chief Financial Officer	Open market purchase	Common Stock	29.0 USD	USD	100.0	2900.0 USD	Open filing
2026-03-20	2026-03-24	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.6 USD	USD	18.0	622.8000000000001 USD	Open filing
2026-03-20	2026-03-24	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.6 USD	USD	25.0	865.0 USD	Open filing
2026-03-20	2026-03-24	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.6 USD	USD	10.0	346.0 USD	Open filing
2026-03-20	2026-03-24	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.6 USD	USD	10.0	346.0 USD	Open filing
2026-03-20	2026-03-24	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.6 USD	USD	18.0	622.8000000000001 USD	Open filing
2026-03-20	2026-03-24	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.6 USD	USD	25.0	865.0 USD	Open filing
2026-03-20	2026-03-23	Nagelberg Allison	Director	Open market purchase	Common Stock	33.96 USD	USD	150.0	5094.0 USD	Open filing
2026-03-19	2026-03-20	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.06 USD	USD	18.0	613.08 USD	Open filing
2026-03-19	2026-03-20	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.06 USD	USD	25.0	851.5 USD	Open filing
2026-03-19	2026-03-20	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.06 USD	USD	46.0	1566.7600000000002 USD	Open filing
2026-03-18	2026-03-19	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.0 USD	USD	10.0	340.0 USD	Open filing
2026-03-18	2026-03-19	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.0 USD	USD	9.0	306.0 USD	Open filing
2026-03-18	2026-03-19	Horizon Common Inc; STAHL MURRAY	CEO and CIO	Open market purchase	Common Stock	34.0 USD	USD	8.0	272.0 USD	Open filing
2026-03-18	2026-03-19	Herndon Mark	Chief Financial Officer	Open market purchase	Common Stock	33.03 USD	USD	80.0	2642.4 USD	Open filing
2026-03-18	2026-03-19	Rosenthal Brent D	Director	Open market purchase	Common Stock	33.05 USD	USD	750.0	24787.499999999996 USD	Open filing
2026-05-20	2026-05-21	Herndon Mark	Chief Financial Officer	Open market purchase	Common Stock	27.85 USD	USD	100.0	2785.0 USD	Open filing
2026-05-20	2026-05-21	Rosenthal Brent D	Director	Open market purchase	Common Stock	27.85 USD	USD	700.0	19495.0 USD	Open filing
2026-09-18	2026-09-22	Nagelberg Allison	Director	Open market purchase	Common Stock	26.27 USD	USD	190.0	4991.3 USD	Open filing
2026-09-02	2026-09-03	Brennan Alice C	Director	Open market purchase	Common Stock	25.92 USD	USD	200.0	5184.0 USD	Open filing
2026-08-28	2026-08-31	Brennan Alice C	Director	Open market purchase	Common Stock	26.2 USD	USD	200.0	5240.0 USD	Open filing
2026-08-27	2026-08-28	Brennan Alice C	Director	Open market purchase	Common Stock	26.0 USD	USD	200.0	5200.0 USD	Open filing
2026-08-26	2026-08-27	Maran Capital Management, LLC; Maran Partners Fund, LP; Maran Partners GP, LLC; Roller Daniel J	Director,Other; Other	Open market purchase	Common Stock	26.5 USD	USD	500.0	13250.0 USD	Open filing
2026-08-25	2026-08-26	Brennan Alice C	Director	Open market purchase	Common Stock	26.75 USD	USD	200.0	5350.0 USD	Open filing
2026-08-24	2026-08-25	Brennan Alice C	Director	Open market purchase	Common Stock	26.87 USD	USD	200.0	5374.0 USD	Open filing
2026-08-24	2026-08-25	Rosenthal Brent D	Director	Open market purchase	Common Stock	27.0 USD	USD	2000.0	54000.0 USD	Open filing
2026-08-20	2026-08-20	Herndon Mark	Chief Financial Officer	Open market purchase	Common Stock	26.75 USD	USD	200.0	5350.0 USD	Open filing
2026-08-19	2026-08-20	Herndon Mark	Chief Financial Officer	Open market purchase	Common Stock	26.5 USD	USD	50.0	1325.0 USD	Open filing

Showing 73 of 73 matching raw-feed row(s) from the current 365-day research window. Prices and reported values remain in the filing currency and its major unit (for example, UK pence are parsed as GBP). The screen-level $ aggregate is separately FX-normalised for research ranking, not a trade-date conversion.

Other disclosed transactions · excluded from score

View 2 other transaction(s)

Dec 23, 2025Other acquisition or disposition

Maran Capital Management, LLC; Maran Partners Fund, LP; Maran Partners GP, LLC; Maran SPV GP, LLC; Maran SPV, LP; Roller Daniel J · Director,Other; Other

Common Stock · 42000.0 shares × 0.0 USD · 0.0 USD

Open filing

Dec 23, 2025Other acquisition or disposition

Maran Capital Management, LLC; Maran Partners Fund, LP; Maran Partners GP, LLC; Maran SPV GP, LLC; Maran SPV, LP; Roller Daniel J · Director,Other; Other

Common Stock · 25360.0 shares × 0.0 USD · 0.0 USD

Open filing

Showing 2 of 2 matching raw-feed row(s) from the current 365-day research window. Prices and reported values remain in the filing currency and its major unit (for example, UK pence are parsed as GBP). The screen-level $ aggregate is separately FX-normalised for research ranking, not a trade-date conversion.

Snapshot & identity

Snapshot date: 2026-10-18
Ticker: HKHC
ISIN: —
Sector: Financial Services
Industry: —

Company logos by Parqet

How to read Form 4 transaction codes

Code	Interpretation	Screen treatment
P	Open-market / private purchase	Buy evidence when the security is qualifying equity
S	Sale	Sell evidence when the security is qualifying equity
A	Grant / award	Context only
F	Tax-related withholding	Context only
M	Option exercise	Context only
G	Gift	Context only
J / L	Other / non-directional	Context only

P/S rows for options, warrants, compensation units and debt remain visible for audit but are excluded from equity scores and quotes.

Horizon Kinetics Holding Corp

WHY THIS SIGNAL?

Score anatomy

What is holding the score back?

BUYING PROFILE

Buying concentration

Key purchase quotes (filing currency)

Cluster breakdown (does not change the score)

What the filings show

Insider vs stock price

If you had followed the purchase

Insider timeline

This company: insiders buying per month, last 12 months

Who traded

Two readings of this buying

Where the evidence comes from

Bull case · the buying is informative

Bear case · discount it

Evidence still missing

Signal score history

Recent recorded points

Sector context

Insider profile outcomes

Signal outcomes

Market context

PRICE PERFORMANCE

VOLATILITY & LIQUIDITY

VALUATION

FUNDAMENTALS

Insiders' buying price vs the latest close

Buying size vs market trading

Latest news

Regulatory filings

Results and insider purchases

Ownership and trading-plan context

Filing evidence

Other disclosed transactions · excluded from score

Snapshot & identity

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How to read Form 4 transaction codes