Cyclerion Therapeutics Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 2.9%.

Top 25 shareholders own 66.48% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
15%	Peter Hecht	377,385	US$535.9k	0%	no data
14.2%	Slate Path Capital LP	357,880	US$508.2k	0%	0.01%
6.74%	MFN Partners Management, LP	169,460	US$240.6k	0%	0.01%
6.55%	Tyndall Capital Partners LP	164,777	US$234.0k	0%	100.0%
6.27%	FMR LLC	157,636	US$223.8k	-2.34%	no data
4.62%	The Invus Group, LLC	116,155	US$164.9k	0%	0.01%
3.99%	Regina Graul	100,303	US$142.4k	0%	no data
1.99%	Errol De Souza	50,000	US$71.0k	0%	no data
1.44%	Polaris Venture Partners, Inc.	36,121	US$51.3k	0%	0.04%
1.35%	Geode Capital Management, LLC	33,908	US$48.1k	-0.21%	no data
0.93%	The Vanguard Group, Inc.	23,490	US$33.4k	0%	no data
0.79%	Steven Hyman	20,000	US$28.4k	0%	no data
0.79%	Michael Higgins	20,000	US$28.4k	0%	no data
0.79%	Dina Katabi	20,000	US$28.4k	0%	no data
0.67%	BlackRock, Inc.	16,797	US$23.9k	-2.17%	no data
0.23%	Terrance McGuire	5,897	US$8.4k	0%	no data
0.043%	Tower Research Capital Europe Limited	1,078	US$1.5k	-26.4%	no data
0.026%	Morgan Stanley, Investment Banking and Brokerage Investments	649	US$921.7	0%	no data
0.021%	Group One Trading LP, Asset Management Arm	540	US$766.7	0%	no data
0.0058%	UBS Asset Management AG	145	US$205.8	-94.6%	no data
0.0056%	Bg Fund Management Luxembourg S.A.	140	US$198.6	0%	no data
0.004%	Activest Wealth Management, LLC	100	US$141.8	0%	no data
0.00091%	Bank of America Corporation, Asset Management Arm	23	US$32.5	43.8%	no data
0.00072%	Rhonda Chicko	18	US$25.7	0%	no data
0.00004%	Northwestern Mutual Wealth Management Company	1	US$1.4	0%	no data