Decoy Therapeutics DCOY Insider Ownership

NASDAQ DCOY
$3.28 -0.13 (-3.81%)
At close: Aug 20, 2026 · 4:00 PM EDT

Historic Insider Ownership Trends

As of August 04, 2026, the three largest insider holders of DCOY are David J. Arthur (Chief Executive Officer, 596.35K shares), David J. Arthur (Chief Executive Officer, 48.02K shares), William K. Mcvicar (Director, 26.55K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Arnold C Hanish - 0 5,000 02 Jan, 2026
Mark J Rosenblum Exec Vp Finance, Cfo 20,177 0 20 Nov, 2025
Jonathan I Lieber - 2,940 0 05 Jan, 2023
Paul Lammers - 1,718 0 05 Jan, 2023
William K. Mcvicar - 0 26,553 07 Jun, 2022
David J. Arthur Chief Executive Officer 0 596,348 31 May, 2022
Tess Burleson - 2,722 0 05 Jan, 2023
Bruce J Jr. Mccreedy - 1,788 0 05 Jan, 2023

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
30 Dec, 2025 Arnold C Hanish Common Stock D 15 $0.64 5,000 I S
30 Dec, 2025 Arnold C Hanish Common Stock D 12 $0.64 0 D S
20 Nov, 2025 Arnold C Hanish Common Stock A 5,000 $0.75 5,015 I P
20 Nov, 2025 Mark J Rosenblum Common Stock A 20,000 $0.80 20,177 D P
11 Apr, 2024 David J. Arthur Stock Option (right to buy) A 20,500 $0.00 20,500 D A
20 Feb, 2024 Jonathan I Lieber Stock Option (right to buy) A 20,500 $0.00 20,500 D A
20 Feb, 2024 Tess Burleson Stock Option (right to buy) A 20,500 $0.00 20,500 D A
20 Feb, 2024 Bruce J Jr. Mccreedy Stock Option (right to buy) A 20,500 $0.00 20,500 D A
20 Feb, 2024 Arnold C Hanish Stock Option (right to buy) A 20,500 $0.00 20,500 D A
20 Feb, 2024 Paul Lammers Stock Option (right to buy) A 20,500 $0.00 20,500 D A
20 Feb, 2024 Mark J Rosenblum Stock Option (right to buy) A 22,500 $0.00 22,500 D A
20 Feb, 2024 William K. Mcvicar Stock Option (right to buy) A 20,500 $0.00 20,500 D A
13 Feb, 2023 Mark J Rosenblum Common Stock A 6,432 $0.00 21,851 D A
13 Feb, 2023 David J. Arthur Common Stock A 14,300 $0.00 48,019 D A
03 Jan, 2023 Jonathan I Lieber Common Stock A 1,440 $0.00 2,940 D A
03 Jan, 2023 William K. Mcvicar Common Stock A 1,440 $0.00 1,788 D A
03 Jan, 2023 Arnold C Hanish Common Stock A 1,440 $0.00 1,440 D A
03 Jan, 2023 Mark J Rosenblum Common Stock A 8,000 $0.00 15,419 D A
03 Jan, 2023 Paul Lammers Common Stock A 1,440 $0.00 1,718 D A
03 Jan, 2023 Bruce J Jr. Mccreedy Common Stock A 1,440 $0.00 1,788 D A