Korsana Biosciences Inc.

Last updated September 27, 2026

Organization details

Legal name
Korsana Biosciences Inc.
Former names
Cyclerion Therapeutics, Inc.
Ownership
Public
Status
Active
SIC code
2834 — Pharmaceutical Preparations
Jurisdiction of incorporation
Massachusetts
Headquarters city
Waltham
Headquarters state / province
Massachusetts
Headquarters country
United States
Fiscal year end
December
Ticker symbol
KRSA
Primary stock exchange
Nasdaq

Identifiers

SEC CIK
0001755237
EIN
83-1895370

Board of directors

Director election results

Annual meeting of August 26, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Board connections

8 of this board's directors also sit on 20 other boards.

Network of Korsana Biosciences Inc.'s board connections Crescent Biopharma Inc. Crescent Biopharma Inc... Dianthus Therapeutics Inc. Dianthus Therapeutics... Viridian Therapeutics Inc. Viridian Therapeutics... Alector Inc. Alector Inc. Jade Biosciences Inc. Jade Biosciences Inc. Oruka Therapeutics Inc. Oruka Therapeutics Inc... Spyre Therapeutics Inc. Spyre Therapeutics Inc... Voyager Therapeutics Inc. Voyager Therapeutics I... Zenas BioPharma Inc. Zenas BioPharma Inc. CAMP4 Therapeutics Corporation CAMP4 Therapeutics Cor... Cogent Biosciences Inc. Cogent Biosciences Inc... Damora Therapeutics Inc. Damora Therapeutics In... Invivyd Inc. Invivyd Inc. Lisata Therapeutics Inc. Lisata Therapeutics In... PepGen Inc. PepGen Inc. Perspective Therapeutics Inc. Perspective Therapeuti... Errol B. Desouza Errol B. Desouza Heidi Henson Heidi Henson Jonathan Violin Jonathan Violin Michael J. Higgins Michael J. Higgins Peter Evan Harwin Peter Evan Harwin Steven Hyman Steven Hyman Terrance Mcguire Terrance Mcguire Tomas Kiselak Tomas Kiselak Korsana Biosciences Inc.
Shared director Other board Same sector +4 more in the list below

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months
$0
0 purchases by 0 insiders
Sold, last 12 months
$0
0 sales by 0 insiders
Date Insider Transaction Shares Price Value
Aug 14, 2026 CHICKO RHONDA M. Officer (Chief Financial Officer) Option exercise +25,000 $2.36 $58,875
Aug 14, 2026 Regina Margaret Graul Director, Officer (See Remarks) Option exercise +55,849 $3.30 $184,302
Aug 14, 2026 Regina Margaret Graul Director, Officer (See Remarks) Shares withheld for tax −48,629 $3.79 $184,304
Jul 16, 2026 Peter M. Hecht Director, 10% owner Derivative conversion +351,037 — —
Mar 25, 2025 Peter M. Hecht Director, 10% owner Grant or award +181,818 $2.75 $500,000
Mar 25, 2025 Michael J. Higgins Director Grant or award +9,090 $2.75 $24,998
Nov 21, 2024 Greenspan David Gerald 10% owner Open-market sale −357,880 $1.55 $554,714
Jan 1, 2024 Peter M. Hecht Director, 10% owner Grant or award +15,000 — —
Jan 1, 2024 Graul Regina Margaret Officer (President) Grant or award +50,000 — —
Dec 1, 2023 Peter M. Hecht Director, 10% owner Grant or award +15,000 — —
Nov 30, 2023 Terrance Mcguire Director Grant or award +5,000 — —
Nov 30, 2023 Peter M. Hecht Director, 10% owner Grant or award +20,000 — —
Nov 30, 2023 Errol B. Desouza Director Grant or award +20,000 — —
Nov 30, 2023 Steven Hyman Director Grant or award +20,000 — —
Nov 30, 2023 Errol B. Desouza Director Grant or award +30,000 — —

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