Cyclerion director Gottesdiener reports no holdings

Form 3 identifies Andrew Gottesdiener as a director of Cyclerion Therapeutics, with no Cyclerion equity holdings or transactions reported.

Available on EDGAR 09/10/2026 - 05:31 PM EDT Accepted by SEC EDGAR 09/10/2026 - 05:31 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Cyclerion Therapeutics, Inc. (CYCN) filed an initial statement of beneficial ownership on Form 3 for Andrew Gottesdiener, identifying him as a director of the company. The filing reports no equity holdings or derivative positions and discloses no transactions in Cyclerion securities.

Key Terms

Form 3, beneficial ownership, Power of Attorney

3 terms

Form 3 regulatory

"filed an initial statement of beneficial ownership on Form 3"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

beneficial ownership financial

"filed an initial statement of beneficial ownership on Form 3"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Power of Attorney regulatory

"Exhibit 24 - Power of Attorney"

A power of attorney is a legal document that allows one person to make decisions and act on behalf of another person, often in financial or legal matters. It’s like giving someone a trusted helper or agent the authority to handle important tasks if you are unable to do so yourself. This matters to investors because it can impact how their assets are managed or transferred if they become unable to oversee their affairs.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 3 filing for CYCN disclose about Andrew Gottesdiener?

The Form 3 lists Andrew Gottesdiener as a director of Cyclerion Therapeutics, Inc. It serves as his initial statement of beneficial ownership in Cyclerion securities but shows no reported holdings or derivative positions.

Are any Cyclerion Therapeutics (CYCN) share transactions reported in this Form 3?

No. The Form 3 for Cyclerion Therapeutics reports no transactions in CYCN securities. It is an initial ownership filing only, with zero reported purchases, sales, or derivative exercises.

Does the CYCN Form 3 show how many shares Andrew Gottesdiener owns?

No. The Form 3 does not report any direct or indirect share holdings or derivative positions for Andrew Gottesdiener in Cyclerion Therapeutics at the time of the filing.

Is there any Rule 10b5-1 trading plan disclosed in the CYCN Form 3?

No. The Form 3 does not indicate that a Rule 10b5-1 trading plan applies. It simply identifies Andrew Gottesdiener as a director and reports no securities transactions.

What additional document is referenced in the CYCN Form 3?

The Form 3 references an Exhibit 24 - Power of Attorney, indicating that a power of attorney related to this reporting has been filed as an exhibit.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Gottesdiener Andrew

(Last) (First) (Middle)

C/O KORSANA BIOSCIENCES, INC.

203 CRESCENT STREET, SUITE 503

(Street)

WALTHAM MASSACHUSETTS 02453

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
09/08/2026

3. Issuer Name and Ticker or Trading Symbol
Korsana Biosciences, Inc. [ KRSA ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit 24 - Power of Attorney

No securities are beneficially owned.

	/s/ Mark Vignola, as attorney-in-fact for Andrew Gottesdiener	09/10/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)