Saurabh Saha plans 2.3M CNTA share sale under Rule 144

Rhea-AI Filing Summary

A holder has filed a Rule 144 notice to sell 2,300,000 shares of Class A common stock through UBS Financial Services, with an aggregate market value of $52,601,000, targeting an approximate sale date of 01/21/2026 on NASDAQ. The form also lists 1,344,478 shares as the number of shares or other units outstanding.

The shares to be sold were acquired on 01/21/2026 via a stock option exercise from the issuer, paid in cash. Over the prior three months, the same seller, Saurabh Saha, reported multiple open-market sales of common stock, including 124,335 shares on 01/02/2026 for $2,976,499 and 1,100,000 shares on 01/15/2026 for $24,666,295, along with several other sizable transactions in early January.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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
Class A Common Stock	UBS Financial Services Inc 1000 Harbor Blvd 3rd Floor Weehawken NJ 07086	2300000	52601000	1344478	01/21/2026	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 *
Class A Common Stock	01/21/2026	Stock Option Exercise	Issuer			2300000	01/21/2026	Cash

* 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
Saurabh Saha 1 Federal Street 38th Floor Boston MA 02110	Common	01/02/2026	124335	2976499
Saurabh Saha 1 Federal Street 38th Floor Boston MA 02110	Common	01/05/2026	147920	3358709
Saurabh Saha 1 Federal Street 38th Floor Boston MA 02110	Common	01/06/2026	122390	2801569
Saurabh Saha 1 Federal Street 38th Floor Boston MA 02110	Common	01/07/2026	147455	3349670
Saurabh Saha 1 Federal Street 38th Floor Boston MA 02110	Common	01/08/2026	118416	2621991
Saurabh Saha 1 Federal Street 38th Floor Boston MA 02110	Common	01/09/2026	121618	2740041
Saurabh Saha 1 Federal Street 38th Floor Boston MA 02110	Common	01/12/2026	45676	1002816
Saurabh Saha 1 Federal Street 38th Floor Boston MA 02110	Common	01/13/2026	86493	1916690
Saurabh Saha 1 Federal Street 38th Floor Boston MA 02110	Common	01/14/2026	126905	2794921
Saurabh Saha 1 Federal Street 38th Floor Boston MA 02110	Common	01/15/2026	1100000	24666295
Saurabh Saha 1 Federal Street 38th Floor Boston MA 02110	Common	01/16/2026	358792	8056096

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many CNTA shares are planned for sale under this Rule 144 notice?

The notice covers a proposed sale of 2,300,000 shares of Class A common stock, with an aggregate market value of $52,601,000, to be sold through UBS Financial Services on or around 01/21/2026 on NASDAQ.

How and when were the CNTA shares to be sold under Rule 144 acquired?

The 2,300,000 Class A common shares listed for sale were acquired on 01/21/2026 via a stock option exercise from the issuer, with the form indicating the nature of payment as cash.

What prior CNTA share sales by Saurabh Saha are disclosed in the past 3 months?

The filing lists several sales of common stock by Saurabh Saha during early January 2026, including 124,335 shares sold on 01/02/2026 for $2,976,499 and 1,100,000 shares sold on 01/15/2026 for $24,666,295, along with multiple additional trades on dates from 01/05/2026 through 01/16/2026.

What does the Form 144 say about CNTA shares outstanding?

In the securities information section, the notice lists 1,344,478 as the number of shares or other units outstanding for the Class A common stock referenced in the proposed Rule 144 sale.

Which broker and exchange are involved in the planned CNTA Rule 144 sale?

The proposed sale of 2,300,000 Class A common shares is to be executed through UBS Financial Services Inc., with the filing identifying NASDAQ as the securities exchange.

What representation does the seller make in this CNTA Rule 144 notice?

The person for whose account the securities are to be sold represents by signing that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed.