Century Therapeutics SVP sells 1,658 shares for taxes

Century Therapeutics’ SVP Finance & Operations reported an automatic tax-withholding sale tied to RSU vesting, retaining over 500,000 shares afterward.

Rhea-AI Filing Summary

Century Therapeutics, Inc. (IPSC) reported that Douglas Carr, its SVP Finance & Operations, sold 1,658 shares of common stock on September 14, 2026 at $1.93 per share. According to the company’s disclosure, these shares were sold automatically to cover tax withholding obligations from vesting restricted stock units, and Carr held 502,907 shares directly afterward.

Insider Trade Summary

Net Seller: 1,658 shares

Net Sell 1 txn

Insider Carr Douglas

Role SVP Finance & Operations

Sold 1,658 shs ($3K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	1,658	$1.93	$3K

Holdings After Transaction: Common Stock — 502,907 shares (Direct)

Footnotes (1)

1. F1. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

Key Figures

Shares sold: 1,658 shares Sale price per share: $1.93 per share Shares owned after transaction: 502,907 shares

3 metrics

Shares sold 1,658 shares Common stock sold on September 14, 2026 to cover tax withholding

Sale price per share $1.93 per share Price for the 1,658 common shares sold on September 14, 2026

Shares owned after transaction 502,907 shares Direct ownership of Douglas Carr following the September 14, 2026 sale

Key Terms

restricted stock units, tax withholding obligations, Sale in open market or private transaction

3 terms

restricted stock units financial

"in connection with the vesting of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"to cover tax withholding obligations in connection with the vesting"

Sale in open market or private transaction financial

"transaction code description indicates a Sale in open market or private transaction"

FAQ

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

What insider transaction did Century Therapeutics (IPSC) report for Douglas Carr?

Douglas Carr reported a sale of 1,658 Century Therapeutics (IPSC) common shares on September 14, 2026 at $1.93 per share. The company states the sale was made automatically to satisfy tax withholding obligations from vesting restricted stock units.

Why were Century Therapeutics (IPSC) shares sold by the SVP Finance & Operations?

The filing states the 1,658 shares sold on September 14, 2026 represented shares required to be sold to cover tax withholding obligations related to vesting restricted stock units, and that these sales were automatic and not at the discretion of Douglas Carr.

How many Century Therapeutics (IPSC) shares does Douglas Carr hold after this transaction?

After the reported transaction, Douglas Carr directly holds 502,907 shares of Century Therapeutics common stock. This figure is disclosed as his total direct ownership following the September 14, 2026 sale to cover tax withholding obligations.

What price was received for the Century Therapeutics (IPSC) shares sold?

The 1,658 Century Therapeutics shares sold on September 14, 2026 were transacted at a price of $1.93 per share, described as a sale in an open market or private transaction, tied to tax withholding from vesting restricted stock units.

Was the Century Therapeutics (IPSC) insider sale under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not marked as a plan transaction, and the footnote explains the sale was automatic to cover tax withholding on RSU vesting, rather than being executed at the insider’s discretion under a trading plan.

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

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Available on EDGAR 09/15/2026 - 06:26 PM Accepted by SEC EDGAR 09/15/2026 - 06:25 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

Carr Douglas

(Last) (First) (Middle)

C/O CENTURY THERAPEUTICS, INC.

25 N 38TH STREET, 12TH FLOOR

(Street)

PHILADELPHIA PENNSYLVANIA 19104

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Century Therapeutics, Inc. [ IPSC ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP Finance & Operations

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/14/2026

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

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/14/2026		S(1)		1,658	D	$1.93	502,907	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

	/s/ Douglas Carr	09/15/2026
	** 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 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)