Cyclerion Therapeutics, Inc. (CYCN) Insider Ownership

Historic Insider Ownership Trends

CYCN's three largest insider shareholders as of March 23, 2026 are Peter M Hecht (Director, 559.20K shares), Regina Margaret Graul (President, 100.30K shares), Michael J Higgins (Director, 30.74K 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
Peter M Hecht 559,203 0 27 Mar, 2025
Regina Margaret Graul President 100,303 0 26 Jan, 2024
Michael J Higgins 30,740 0 27 Mar, 2025
Errol B Desouza 30,000 0 04 Dec, 2023
Steven Hyman 20,000 0 04 Dec, 2023
Terrance Mcguire 5,552 0 04 Dec, 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
07 Aug, 2025 Rhonda M. Chicko Stock Option (Right to Buy) A 25,000 $0.00 25,000 D A
25 Mar, 2025 Peter M Hecht Common Stock A 181,818 $2.75 559,203 D A
25 Mar, 2025 Michael J Higgins Common Stock A 9,090 $2.75 30,740 D A
21 Nov, 2024 Path Capital Lp Slate Common Stock, no par value D 357,880 $1.55 0 I S
05 Aug, 2024 Regina Margaret Graul Stock Option (Right to Buy) A 55,849 $0.00 55,849 D A
01 Jan, 2024 Regina Margaret Graul Common Stock A 50,000 $0.00 100,303 D A
01 Jan, 2024 Peter M Hecht Common Stock A 15,000 $0.00 377,385 D A
30 Nov, 2023 Steven Hyman Common Stock A 20,000 $0.00 20,000 D A
30 Nov, 2023 Errol B Desouza Common Stock A 20,000 $0.00 50,000 D A
30 Nov, 2023 Peter M Hecht Common Stock A 20,000 $0.00 347,385 D A
30 Nov, 2023 Terrance Mcguire Common Stock A 5,000 $0.00 5,552 D A
30 Nov, 2023 Errol B Desouza Common Stock A 30,000 $0.00 30,000 D A
01 Dec, 2023 Peter M Hecht Common Stock A 15,000 $0.00 362,385 D A
09 Aug, 2023 Terrance Mcguire Common Stock D 8 $3.40 0 I S
19 May, 2023 Peter M Hecht Common Stock A 225,000 $8.68 327,385 D A
19 May, 2023 Peter M Hecht Series A Convertible Preferred Stock A 351,037 $8.68 351,037 D A
25 Jul, 2022 Steven Hyman Stock Option (Right to Buy) A 57,753 $0.00 57,753 D A
25 Jul, 2022 Steven Hyman Stock Option (Right to Buy) A 57,753 $0.00 57,753 D A
14 Jun, 2022 Michael Mendelsohn Stock Option (Right to Buy) A 20,000 $0.00 20,000 D A
14 Jun, 2022 Ole Isacson Stock Option (Right to Buy) A 20,000 $0.00 20,000 D A