Century Therapeutics officer plans 1,658-share sale

Officer Douglas Carr has filed a Rule 144 notice to sell vested Century Therapeutics (IPSC) shares, including shares to cover related tax obligations.

Rhea-AI Filing Summary

Century Therapeutics, Inc. (IPSC) is the issuer for a planned sale of common stock reported on behalf of officer Douglas Carr under Rule 144. The notice covers up to 1,658 shares of common stock to be sold through Fidelity Brokerage Services LLC on NASDAQ, with an estimated aggregate sale price of $3,200.77.

The shares to be sold arise from restricted stock vesting on September 11, 2026, received from the issuer as compensation. In the prior three months, Carr reported additional sales of 275 shares on August 3, 2026 for $543.73 and 254 shares on September 8, 2026 for $520.57. A remark states that the sale includes shares to cover a tax obligation from settlement of a vested equity award distribution.

Key Figures

Shares planned for sale: 1,658 shares Estimated aggregate sale price: $3,200.77 Shares sold August 3, 2026: 275 shares +5 more

8 metrics

Shares planned for sale 1,658 shares Common stock covered by the Rule 144 notice

Estimated aggregate sale price $3,200.77 Planned sale of 1,658 common shares

Shares sold August 3, 2026 275 shares Common stock sold in the past three months

Proceeds August 3, 2026 sale $543.73 Common stock sale by Douglas Carr

Shares sold September 8, 2026 254 shares Common stock sold in the past three months

Proceeds September 8, 2026 sale $520.57 Common stock sale by Douglas Carr

Date of restricted stock vesting September 11, 2026 Source of shares to be sold as compensation

Date of Rule 144 notice September 14, 2026 Filing date of the Form 144 notice

Key Terms

Rule 144, restricted stock vesting, vested equity award distribution

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock vesting financial

"Common | 09/11/2026 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

vested equity award distribution financial

"resulting from the settlement of a vested equity award distribution."

FAQ

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

What does Century Therapeutics (IPSC) disclose in this Form 144 filing?

The filing discloses that officer Douglas Carr filed a Rule 144 notice to sell up to 1,658 shares of Century Therapeutics common stock, arising from restricted stock vesting received as compensation and including shares to cover a related tax obligation.

How many Century Therapeutics (IPSC) shares are planned to be sold under this Rule 144?

The notice covers a planned sale of up to 1,658 shares of Century Therapeutics common stock, with an estimated aggregate sale price of $3,200.77, to be sold through Fidelity Brokerage Services LLC on NASDAQ.

What is the source of the IPSC shares being sold by Douglas Carr?

The shares come from restricted stock vesting on September 11, 2026, received directly from Century Therapeutics as compensation. The remarks state the sale includes an amount needed to cover a tax obligation from settlement of a vested equity award distribution.

What recent Century Therapeutics (IPSC) share sales has Douglas Carr reported?

Within the past three months, Douglas Carr reported selling 275 shares of Century Therapeutics common stock on August 3, 2026 for $543.73 and 254 shares on September 8, 2026 for $520.57.

Who is executing the planned Rule 144 sale for Century Therapeutics (IPSC) shares?

The planned sale of 1,658 shares of Century Therapeutics common stock is to be executed through Fidelity Brokerage Services LLC on NASDAQ. The Form 144 is signed by Tyler Johnson as a duly authorized representative of Fidelity, acting as attorney-in-fact for Douglas Carr.

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

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Available on EDGAR 09/14/2026 - 03:29 PM Accepted by SEC EDGAR 09/14/2026 - 03:29 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001867173
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Century Therapeutics, Inc.
SEC File Number	001-40498
Address of Issuer	25 N 38TH STREET, 12TH FLOOR PHILADELPHIA PENNSYLVANIA 19104
Phone	215-981-4000
Name of Person for Whose Account the Securities are To Be Sold	Carr Douglas
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	1658	3200.77	181075321	09/14/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/11/2026	Restricted Stock Vesting	Issuer			1658	09/11/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Douglas Carr 25 N 38th Street 12th Floor Philadelphia PA 19104	Common	08/03/2026	275	543.73
Douglas Carr 25 N 38th Street 12th Floor Philadelphia PA 19104	Common	09/08/2026	254	520.57

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	09/14/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Tyler Johnson, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Douglas Carr
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)