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Cyclerion Therapeutics (CYCN) director converts 351,037 preferred to common shares

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Cyclerion Therapeutics, Inc. director and 10% owner Peter M. Hecht converted 351,037 shares of Series A Convertible Preferred Stock into 351,037 shares of Common Stock on July 16, 2026, leaving no preferred shares outstanding. His direct Common Stock holdings after the conversion total 910,240 shares, and all previously held stock options were cancelled the same day. Separate family trusts each hold 24 Common shares, for which he disclaims beneficial ownership.

Positive

  • None.

Negative

  • None.
Insider Hecht Peter M
Role Director, 10% Owner
Type Security Shares Price Value
Conversion Series A Convertible Preferred Stock F1, F3 351,037 -- --
Conversion Common Stock F1 351,037 -- --
holding Common Stock F2 -- -- --
holding Common Stock F2 -- -- --
holding Common Stock F2 -- -- --
Holdings After Transaction: Series A Convertible Preferred Stock — 0 shares (Direct); Common Stock — 910,240 shares (Direct); Common Stock — 24 shares (Indirect, The 2000 Trust for Alexis Mae Hecht); Common Stock — 24 shares (Indirect, The 2000 Trust for Malcolm Paul Hecht); Common Stock — 24 shares (Indirect, The 2000 Trust for Zoe Niovi Hecht)
Footnotes (3)
  1. F1. On May 19, 2023, the reporting person purchased directly from the Issuer 351,037 shares of Series A Convertible Preferred Stock (the "Series A Preferred Stock") at a price of $8.68 per share in a private placement transaction pursuant to the Stock Purchase Agreement dated as of March 31, 2023 between the reporting person and the Issuer. The Series A Preferred Stock is convertible to Common Stock on a one-for-one basis at the option of the holder thereof. On July 16, 2026, the reporting person converted all 351,037 shares of Series A Convertible Preferred Stock into 351,037 shares of Common Stock.
  2. F2. These shares are held in the referenced trust for the benefit of the reporting person's child. The reporting person's spouse is the trustee of this trust. The reporting person disclaims beneficial ownership of these securities, and the filing of this report is not an admission that the reporting person is the beneficial owner of these securities for purposes of Section 16 or any other purpose.
  3. F3. All options to purchase Common Stock previously held by the reporting person were cancelled on July 16, 2026. As a result, the reporting person no longer holds options to purchase Common Stock.
Series A Preferred Purchased 351,037 shares Shares of Series A Convertible Preferred Stock purchased on May 19, 2023
Purchase Price per Preferred Share $8.68 per share Price paid in the May 19, 2023 private placement
Series A Preferred Converted 351,037 shares Series A Convertible Preferred Stock converted to Common Stock on July 16, 2026
Common Shares Received via Conversion 351,037 shares Common Stock issued one-for-one upon conversion of preferred shares
Direct Common Shares After Conversion 910,240 shares Total direct Common Stock holdings following the July 16, 2026 transaction
Indirect Trust Holdings per Trust 24 shares Common shares held in each of three child trusts, beneficial ownership disclaimed
Series A Convertible Preferred Stock financial
"purchased directly from the Issuer 351,037 shares of Series A Convertible Preferred Stock at a price"
Series A convertible preferred stock is a class of shares sold in an early funding round that gives investors a mix of protection and upside: it pays a priority claim over common shares if the company is sold or closes, but can be converted into ordinary shares to share in future growth. Think of it like a hybrid between a safer stake and a ticket to ownership; it matters to investors because it affects who controls the company, how future gains are split, and how much their investment is protected from downside.
private placement financial
"shares of Series A Convertible Preferred Stock at a price of $8.68 per share in a private placement transaction"
A private placement is a sale of securities directly to a selected group of investors, typically institutions or accredited investors, instead of through a public offering. It lets a company raise money faster and with fewer regulatory steps; for existing shareholders it matters because the newly issued shares, often sold at a discount, increase the share count and can dilute their ownership.
Stock Purchase Agreement financial
"in a private placement transaction pursuant to the Stock Purchase Agreement dated as of March 31, 2023"
A stock purchase agreement is a legal contract that sets the terms for buying or selling shares, specifying the price, number of shares, how payment is made, and any conditions or promises each side must meet. It matters to investors because it defines who owns what, when ownership changes, and what protections or obligations attach to the deal—think of it as a detailed receipt plus the house rules that determine the financial risks and benefits of the transaction.
Section 16 regulatory
"not an admission that the reporting person is the beneficial owner of these securities for purposes of Section 16 or any other purpose"
Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

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

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FAQ

What insider transaction did Peter M. Hecht report for Cyclerion Therapeutics (CYCN)?

Peter M. Hecht reported converting 351,037 shares of Series A Convertible Preferred Stock into 351,037 shares of Common Stock on July 16, 2026. This eliminated his preferred holdings and increased his direct Common Stock position to 910,240 shares, with no market sale reported.

How many CYCN shares were involved in Hecht's preferred-to-common stock conversion?

The conversion involved 351,037 shares of Series A Convertible Preferred Stock, exchanged one-for-one for 351,037 Common shares. The preferred shares had originally been purchased on May 19, 2023, and were fully converted into Common Stock in this transaction.

What are Peter Hecht's direct Cyclerion (CYCN) common stock holdings after the conversion?

After the conversion, Peter Hecht directly holds 910,240 shares of Cyclerion Common Stock. This post-transaction figure reflects the addition of 351,037 shares received from converting his Series A Convertible Preferred Stock on July 16, 2026, as reported in the Form 4.

At what price did Hecht originally buy the Series A preferred shares of CYCN?

Hecht originally purchased 351,037 Series A Convertible Preferred shares at $8.68 per share on May 19, 2023. The purchase was a private placement under a Stock Purchase Agreement dated March 31, 2023, before these shares were later converted into Common Stock.

What happened to Peter Hecht's stock options in Cyclerion Therapeutics (CYCN)?

All options to purchase Cyclerion Common Stock previously held by Hecht were cancelled on July 16, 2026. A footnote states that, as a result of this cancellation, he no longer holds any options to purchase Common Stock following the reported transactions.

Does Peter Hecht hold CYCN shares through family trusts, and does he claim beneficial ownership?

Three trusts for his children each hold 24 Cyclerion Common shares, with his spouse as trustee. A footnote explains that Hecht disclaims beneficial ownership of these trust-held securities, and the report is not an admission of beneficial ownership for Section 16 purposes.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Hecht Peter M

(Last)(First)(Middle)
C/O CYCLERION THERAPEUTICS, INC.
245 FIRST STREET, 18TH FLOOR

(Street)
CAMBRIDGE MASSACHUSETTS 02142

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Cyclerion Therapeutics, Inc. [ CYCN ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/16/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock07/16/2026C351,037(1)A(1)910,240D
Common Stock24IThe 2000 Trust for Alexis Mae Hecht(2)
Common Stock24IThe 2000 Trust for Malcolm Paul Hecht(2)
Common Stock24IThe 2000 Trust for Zoe Niovi Hecht(2)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Series A Convertible Preferred Stock(1)07/16/2026C351,037 (1) (1)Common Stock351,037(1)(1)0(3)D
Explanation of Responses:
1. On May 19, 2023, the reporting person purchased directly from the Issuer 351,037 shares of Series A Convertible Preferred Stock (the "Series A Preferred Stock") at a price of $8.68 per share in a private placement transaction pursuant to the Stock Purchase Agreement dated as of March 31, 2023 between the reporting person and the Issuer. The Series A Preferred Stock is convertible to Common Stock on a one-for-one basis at the option of the holder thereof. On July 16, 2026, the reporting person converted all 351,037 shares of Series A Convertible Preferred Stock into 351,037 shares of Common Stock.
2. These shares are held in the referenced trust for the benefit of the reporting person's child. The reporting person's spouse is the trustee of this trust. The reporting person disclaims beneficial ownership of these securities, and the filing of this report is not an admission that the reporting person is the beneficial owner of these securities for purposes of Section 16 or any other purpose.
3. All options to purchase Common Stock previously held by the reporting person were cancelled on July 16, 2026. As a result, the reporting person no longer holds options to purchase Common Stock.
/s/ Peter M. Hecht07/20/2026
** Signature of Reporting PersonDate
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 4 (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 4: SEC 1474 (03-26)