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Total declarations
Companies
▲ Purchases (9 ops.)
▼ Sales (0 ops.)
Latest filing published 25 Aug 2026 for Horizon Kinetics Holding Corp, €46k. Read the official filing
Filing timeline
BuySaleBrent D. Rosenthal
Insider track record
Disclosed buys
9
Disclosed sells
0
T+90 hit rate
50%
T+90 mean return
+6.4%
Across 6 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Brent D. Rosenthal: trading record in brief
Brent D. Rosenthal discloses dealings in 3 companies, chiefly Horizon Kinetics Holding Corp, Pitney Bowes Inc /DE/ and Comscore, Inc. Over a trading history stretching from 12 June 2024 to 24 August 2026, the count stands at 10 filings.
Purchases make up the whole of the open-market record (9 purchases, €170k). Open-market purchases are the filings investors watch most closely, because the insider pays for the shares out of pocket. Other entries cover 1 option exercise. 2026 to date brings 3 purchases and no sales.
Half of the purchases are above €11k and half below. 7 out of 9 purchases came within 30 days of a purchase by at least one other insider of the same company. A cluster is several different insiders buying the same stock within a short window, a pattern studied more closely than a single purchase.
The latest filing, published on 25 August 2026, reports an open-market purchase of €46k in Horizon Kinetics Holding Corp. The median gap between a trade and its publication by SEC (Form 4) is 1 day. Section 16 rules allow two business days to file each Form 4. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.
Companies and markets linked to Brent D. Rosenthal
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations10 total
2,000 shares@ US$27.00Common StockSEC:0001437749-26-028880:0
Canonical exit: 22 Nov 2026 (T+90)
750 shares@ US$33.0560.0% of flowCommon StockSEC:0001437749-26-008979:0
Canonical exit: 16 Jun 2026 (T+90)
4,000 shares@ US$10.225100.0% of flowCommon StockSEC:0001443849-26-000001:0
Canonical exit: 11 Jun 2026 (T+90)
300 shares@ US$27.2813.5% of flowCommon StockSEC:0001437749-25-036391:0
Canonical exit: 23 Feb 2026 (T+90)
500 shares@ US$10.0056.1% of flowCommon StockSEC:0001443849-25-000002:0
Canonical exit: 23 Feb 2026 (T+90)
3,000 shares@ US$11.969946.5% of flowCommon StockSEC:0001562180-25-006128:0
Canonical exit: 2 Dec 2025 (T+90)
300 shares@ US$38.0021.5% of flowCommon StockSEC:0001437749-25-028210:0
Canonical exit: 1 Dec 2025 (T+90)
100 shares@ US$37.0624.5% of flowCommon StockSEC:0001437749-24-035814:0
Canonical exit: 17 Feb 2025 (T+90)
300 shares@ US$38.0675.5% of flowCommon StockSEC:0001437749-24-035456:0
Canonical exit: 12 Feb 2025 (T+90)
8,415 shares0Common StockSEC:0001158172-24-000044:0
10 of 10 declarations
