Rosenthal Brent D
SEC insider (Form 3/4/5 filer). CIK 0001443849. Director at Horizon Kinetics Holding Corp (HKHC) and 2 other issuers. 17 reported Form 4/5 transactions since Sep 2024; latest on Aug 24, 2026. Located in NEW YORK, NY.
Companies Rosenthal Brent D has filed insider reports for
- Horizon Kinetics Holding Corp (HKHC): Director
- PITNEY BOWES INC /DE/ (PBI): Director
- SYNTEC OPTICS HOLDINGS, INC. (OPTX): Director
Rosenthal Brent D
CIK: 0001443849
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (17 total)
- Aug 24, 2026HKHC
Horizon Kinetics Holding Corp
PurchaseDirect2K shares at avg. $27.00$54K - Jun 18, 2026PBI
PITNEY BOWES INC /DE/
ExerciseDirect8.8K shares- - May 20, 2026HKHC
Horizon Kinetics Holding Corp
PurchaseDirect700 shares at avg. $27.85$19K - May 12, 2026PBI
PITNEY BOWES INC /DE/
AwardDirectRestricted Stock Unit
18.2K shares- - May 12, 2026PBI
PITNEY BOWES INC /DE/
AwardDirectRestricted Stock Unit
6.5K shares- - Mar 18, 2026HKHC
Horizon Kinetics Holding Corp
PurchaseDirect750 shares at avg. $33.05$25K - Mar 13, 2026PBI
PITNEY BOWES INC /DE/
PurchaseDirect4K shares at avg. $10.22$41K - Feb 20, 2026OPTX
SYNTEC OPTICS HOLDINGS, INC.
AwardDirectRestricted Stock Units
24.6K shares- - Nov 25, 2025HKHC
Horizon Kinetics Holding Corp
PurchaseDirect300 shares at avg. $27.28$8K - Nov 25, 2025PBI
PITNEY BOWES INC /DE/
PurchaseDirect500 shares at avg. $10.01$5K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 24, 2026 |  HKHC Horizon Kinetics Holding Corp | Purchase | 2,000 | $27.00 | $54,000 | Direct |
| Jun 18, 2026 |  PBI PITNEY BOWES INC /DE/ | Exercise | 8,755 | - | $0 | Direct |
| May 20, 2026 | HKHC Horizon Kinetics Holding Corp | Purchase | 700 | $27.85 | $19,495 | Direct |
| May 12, 2026 | PBI PITNEY BOWES INC /DE/ | Award Restricted Stock Unit | 18,159 | - | - | Direct |
| May 12, 2026 | PBI PITNEY BOWES INC /DE/ | Award Restricted Stock Unit | 6,532 | - | - | Direct |
| Mar 18, 2026 | HKHC Horizon Kinetics Holding Corp | Purchase | 750 | $33.05 | $24,787 | Direct |
| Mar 13, 2026 | PBI PITNEY BOWES INC /DE/ | Purchase | 4,000 | $10.22 | $40,900 | Direct |
| Feb 20, 2026 |  OPTX SYNTEC OPTICS HOLDINGS, INC. | Award Restricted Stock Units | 24,646 | - | - | Direct |
| Nov 25, 2025 | HKHC Horizon Kinetics Holding Corp | Purchase | 300 | $27.28 | $8,184 | Direct |
| Nov 25, 2025 | PBI PITNEY BOWES INC /DE/ | Purchase | 500 | $10.01 | $5,003 | Direct |
1-10 of 17 transactions