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HKHC Horizon Kinetics Holding Corp Insider Trading

Latest: Director Bought $19K of Shares · May 2026

Multiple insiders have been active at Horizon Kinetics Holding Corp (HKHC): 9 distinct insiders account for 87 buy filings and 0 sell filings as of May 2026. Its highest-significance filing in the last 90 days: Director Brent D Rosenthal bought $19K, transaction dated May 2026.

87 filings analyzed · Latest 2026-05-21

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Buys
87
Sells
0
Insiders
9
Direction
Net buying

Horizon Kinetics Holding Corp leadership

CEO
Peter Doyle — Co-Chief Executive Officer
CEO
Steven Bregman — Co-Chief Executive Officer
CFO
Mark Herndon — Chief Financial Officer
COO
Alun Williams — Chief Operating Officer
General Counsel
Jay Kesslen — General Counsel and Secretary

Historically, medium-priority insider buys have outperformed the S&P 500 by a median ~1% over the 30 days after the trade — the edge is concentrated in that first month (n ≈ 7,162, 2024-2026). Past results don't predict the future. How we measure this ↗

May 2026
2026-05-21
medium
700 shares
$19,495
@ $27.85
Significance 6

Director Brent D Rosenthal buys 700 HKHC shares at $27.85, raising stake 40.0% to 2,450 shares

Brent D Rosenthal, a Director, purchased 700 shares at $27.85 on 2026-05-20, increasing his holdings from 1,750 shares to 2,450 shares. The current price of $27.85 sits 40.7% below the 52-week high of $47.00, and the stock is up 9.2% over the prior 30 days but down 0.5% over 90 days. His prior trades at HKHC show mixed timing outcomes: of 5 prior buys at this ticker, 3 of 5 were well-timed at the 90-day mark, though the most recent buy on 2026-03-18 showed a 30-day return of -22.3% and a 90-day return of -15.7%. The company's fundamentals include annual revenue growth of +27.4%, net income of $72,532,000.00, and a P/E of 9.47, indicating profitable operations with relatively attractive valuation metrics.

March 2026
2026-03-24
medium
CEO and CIO
53 shares
$1,834
@ $34.60
Significance 6

CEO Stahl Murray purchases 53 shares at $34.60 across 3 transactions; cluster buy pattern with 3 other insiders buying within 14 days.

Stahl Murray, CEO and CIO, executed 3 separate purchases totaling 53 shares for $1,833.80 at a blended average price of $34.60, increasing his holdings from 82 to 135 shares (+64.6%). This filing occurs within a cluster pattern—3 other insiders also bought within the past 14 days—suggesting coordinated conviction at management level. The current price of $33.02 sits -29.7% from the 52-week high of $47.00, placing the transaction in a near-recent-low zone; the stock has rebounded +14.8% in the past 30 days and +39.8% over 90 days. Murray's cross-ticker track record shows 20 prior buys, establishing a baseline of accumulative behavior, though this same-ticker purchase pattern cannot be independently verified without additional HKHC-specific buy history. With Net income of $7,235,000.00 and Revenue of $17,893,000.00 at a high P/E of 76.79, the company's valuation remains stretched even as the stock recovers from its lows. The cluster of insider purchases warrants investor attention to underlying business catalysts and management's assessment of near-term prospects.

2026-03-23
high
150 shares
$5,094
@ $33.96
Significance 6

Director Nagelberg buys 150 shares of HKHC at $33.96; cluster pattern with 3 other insiders in 14 days.

Director Allison Nagelberg purchased 150 shares at $33.96 on 2026-03-20, increasing her holdings by 60.0% from 250 to 400 shares. This purchase occurs as part of a broader cluster pattern, with 3 other insiders also buying within the past 14 days, which may signal coordinated confidence in the stock's value at current levels. Her prior two open-market purchases at HKHC both showed positive 90-day returns (+0.0% and +55.0%), establishing a pattern of well-timed accumulation at this ticker. The stock currently trades at $34.19, up 18.9% over 30 days and 44.1% over 90 days—well above the levels Nagelberg accumulated at ($33.96), though still -27.3% from the 52-week high of $47.00. Against the company's strong recent fundamentals (revenue growth of +27.4% year-over-year, net income of $7,235,000.00), the elevated P/E of 79.51 and recent momentum warrant assessment of whether insiders are positioned ahead of or late into a valuation reset.

2026-03-20
high
CEO and CIO
89 shares
$3,031
@ $34.06
Significance 6

CEO Stahl Murray purchases 89 shares at $34.06 across 3 transactions on 2026-03-19; holdings surge to 117 shares (+317.9%)

Stahl Murray (CEO and CIO) executed 3 separate purchases totaling 89 shares for $3,031.34 at $34.06 per share on 2026-03-19, increasing his holdings from 28 to 117 shares (+317.9%). The timing occurs within a 30-day window where HKHC's stock has risen +22.5% and within a 90-day window of +43.8%, near but below its 52-week high of $47.00. The CEO's concentrated accumulation is reinforced by a cluster pattern: 3 other insiders also bought within the past 14 days. The company's fundamentals show quarterly revenue of $17,893,000.00 with net income of $7,235,000.00 and annual revenue growth of +27.4%, though the P/E ratio of 79.77 remains elevated. The multiple transactions in a single filing from the company's top executive, combined with concurrent buying by other insiders, warrants observation of whether this pattern continues and how near-term execution plays out.

2026-03-19
medium
750 shares
$24,788
@ $33.05
Significance 6

Director Rosenthal buys 750 HKHC shares at $33.05; 75% increase in holdings amid cluster buy pattern

Director Brent D Rosenthal purchased 750 shares of Horizon Kinetics Holding Corp on 2026-03-18 at $33.05, expanding his holdings from 1,000 to 1,750 shares (+75.0%). This transaction occurs within a cluster pattern: 2 other insiders bought within the past 14 days, suggesting coordinated confidence at current valuations. Rosenthal's prior trade history at HKHC shows mixed but notably strong 90-day returns: 3 of 4 prior buys were well-timed, with his November 2025 buy returning +17.3% over 90 days. However, his cross-ticker track record shows an average 90-day return of -3.2% across 8 buys, with a 71.43% win rate, indicating this purchase sits above his typical historical baseline. The stock has rebounded 42.6% over 90 days and trades at a P/E of 79.07 against 27.4% revenue growth and $7.2M net income last quarter, reflecting elevated valuation multiples relative to fundamentals.

2026-03-19
high
CEO and CIO
27 shares
$918
@ $34.00
Significance 6

CEO Stahl Murray bought 27 shares at $34.00 on 2026-03-18; holding now 99 shares (+37.5%); stock +19.3% in 30 days but -27.7% from 52-week high

Stahl Murray (CEO and CIO) executed 3 separate purchases totaling 27 shares for $918.00 at $34.00 per share, increasing his holdings from 72 to 99 shares (+37.5%). The timing occurs as the stock has recovered +19.3% over the past 30 days and +42.6% over 90 days, yet remains -27.7% below its 52-week high of $47.00, suggesting the executive acquired at a price point between recent lows and prior peaks. A cluster of 2 other insiders also purchased within the past 14 days, indicating synchronized insider accumulation. While Murray's cross-ticker track record shows 20 prior buys, his same-ticker HKHC history offers no measurable 90-day outcomes to assess execution quality, leaving the forward signal unvalidated by his prior performance at this specific stock. The company's fundamentals show strong quarterly revenue of $17,893,000.00 with net income of $7,235,000.00 and annual revenue growth of +27.4%, though the elevated P/E of 79.07 reflects aggressive valuation relative to current earnings.

2026-03-19
medium
Chief Financial Officer
80 shares
$2,642
@ $33.03
Significance 5

CFO Mark Herndon buys 80 HKHC shares at $33.03; holdings rise 66.7% to 200 shares amid cluster activity

Mark Herndon, CFO of Horizon Kinetics Holding Corp, purchased 80 shares at $33.03 on 2026-03-18, increasing his total holdings from 120 to 200 shares (+66.7%). The purchase occurred within a 14-day window in which 2 other insiders also bought, forming a cluster pattern. However, Herndon's cross-ticker track record shows limited predictive value: 2 prior buys averaged -7.9% 30-day return and -4.4% 90-day return with a 0.00% win rate. At HKHC specifically, his two prior purchases (on 2025-11-20 and 2025-06-04) neither generated positive 90-day returns, indicating a timing pattern of 0 of 2 well-timed buys at this ticker. The company shows solid fundamentals—revenue growth of +27.4% year-over-year and net income of $7,235,000.00 in the latest quarter—but trades at a P/E of 79.07, and the stock is down 27.7% from its 52-week high of $47.00 despite recent momentum (+19.3% in 30 days, +42.6% in 90 days). The cluster buy pattern warrants tracking to determine whether multiple insiders see genuine value or whether their prior execution has simply been ineffective.

December 2025
2025-12-11
medium
CEO and CIO
22 shares
$594
@ $27.00
Significance 4

CEO Stahl Murray buys 22 shares of HKHC at $27.00 via 3 transactions; stock down 45.1% from 52-week high.

Stahl Murray, CEO and CIO, executed 3 separate purchases totaling 22 shares for $594.00 at a blended average price of $27.00 on 2025-12-10, increasing his holdings from 69 to 91 shares (+31.9%). The transaction occurred as the stock trades at $25.82, representing a 45.1% decline from its 52-week high of $47.00 and a 34.0% decline over the prior 90 days. Murray's cross-ticker buy history shows 20 prior buys, though outcome measurement at this ticker is limited to 1 prior trade (a buy on 2025-12-09) with results not yet measurable. The company's fundamentals include $17.9M quarterly revenue and $7.2M net income, with a compressed valuation at P/E of 5.04. No timing pattern evaluation is available for this insider's prior buys at the 90-day measurement window.

2025-12-10
medium
CEO and CIO
22 shares
$594
@ $27.00
Significance 4

CEO Stahl Murray purchased 22 shares of HKHC at $27.00 across 3 transactions; holdings rise to 87 shares (+33.8%)

Stahl Murray (CEO and CIO) completed 3 separate purchases totaling 22 shares for $594.00 at a blended average price of $27.00 on 2025-12-09. The transaction increased his stake from 65 to 87 shares, representing a +33.8% increase in holdings. The current stock price of $26.00 is -44.7% from its 52-week high and down 33.5% over 90 days, creating a near-term paper loss on this purchase. Horizon Kinetics Holding Corp reports a low P/E of 5.08 and exceptional annual revenue growth of +1580.3% on a base of $17.9M quarterly revenue with $7.2M in net income, suggesting the valuation may reflect recent expansion volatility rather than fundamental distress.

2025-12-09
medium
CEO and CIO
22 shares
$588
@ $26.73
Significance 6

CEO Stahl Murray purchases 22 shares at $26.73 across 3 transactions; stock down 44.2% from 52-week high, 2 other insiders bought within past 14 days.

Stahl Murray, CEO and CIO, executed 3 separate purchases totaling 22 shares for $588.06 on 2025-12-08, bringing his post-transaction holdings to 83 shares (up from 61 shares, a +36.1% increase). The blended average transaction price of $26.73 is positioned above the current price of $26.25, but meaningfully below the 52-week high of $47.00—the stock is currently -44.2% from its 12-month peak and has declined 32.3% over the past 90 days. Notably, 2 other insiders also initiated purchases within the past 14 days, forming a cluster buy pattern. The company reports strong fundamentals with $17.9M in latest quarterly revenue, $7.2M net income, and a low P/E of 5.13, though the market cap of $489.2M and exceptional +1580.3% annual revenue growth suggest material business momentum. The temporal coincidence of multiple insider purchases during a significant drawdown from the 52-week high warrants investor observation.

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