Artiva officer plans sale of 7,818 shares

Artiva Biotherapeutics, Inc. (ARTV) insider Subhashis Banerjee, an officer, filed a Rule 144 notice covering a potential sale of 7,818 shares of common stock through Morgan Stanley Smith Barney LLC on NASDAQ.

Rhea-AI Filing Summary

Artiva Biotherapeutics, Inc. (ARTV) insider Subhashis Banerjee, an officer, filed a Rule 144 notice covering a potential sale of 7,818 shares of common stock through Morgan Stanley Smith Barney LLC on NASDAQ. The filing lists an aggregate market value of approximately $92,017.86 for these shares as of the planned sale date of August 27, 2026.

The notice breaks out the shares as 5,183 shares to be acquired via exercise of stock options for cash on August 27, 2026 and 2,635 shares from restricted stock units vesting on May 15, 2026. It also reports that 429 shares of common stock were previously sold for $5,148.00 on August 18, 2026 under a Rule 10b5-1 trading plan.

Key Figures

Shares proposed to be sold: 7,818 shares Aggregate market value of shares: $92,017.86 Shares from stock option exercise: 5,183 shares +3 more

6 metrics

Shares proposed to be sold 7,818 shares Common stock covered by the Rule 144 notice through Morgan Stanley Smith Barney LLC

Aggregate market value of shares $92,017.86 Market value associated with the 7,818 shares of common stock as of August 27, 2026

Shares from stock option exercise 5,183 shares Common shares to be acquired via Exercise of Stock Options on August 27, 2026

Shares from restricted stock units 2,635 shares Common shares underlying Restricted Stock Units vesting on May 15, 2026

Prior 3‑month sale shares 429 shares Common shares sold on August 18, 2026 under a 10b5-1 trading plan

Proceeds from prior sale $5,148.00 Total proceeds from the 429 shares of common stock sold on August 18, 2026

Key Terms

Rule 144, restricted stock units, Exercise of Stock Options, 10b5-1

4 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 units financial

"The securities to be sold were acquired upon 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.

Exercise of Stock Options financial

"Common | 08/27/2026 | Exercise of Stock Options | Issuer"

10b5-1 regulatory

"10b5-1 Sales for SUBHASHIS BANERJEE"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

FAQ

What does the Form 144 filing by ARTV’s Subhashis Banerjee disclose?

The filing discloses that officer Subhashis Banerjee may sell up to 7,818 shares of Artiva Biotherapeutics, Inc. common stock, with an aggregate market value of about $92,017.86, through Morgan Stanley Smith Barney LLC on or around August 27, 2026.

How many ARTV shares are linked to stock options and RSUs in this Form 144?

The notice states that 5,183 shares are tied to the exercise of stock options on August 27, 2026, and 2,635 shares are from restricted stock units vesting on May 15, 2026, together comprising the 7,818 shares covered by the Form 144.

What past 3‑month sales are reported in the ARTV Form 144?

The filing reports that during the past three months, on August 18, 2026, 429 shares of Artiva Biotherapeutics, Inc. common stock were sold for total proceeds of $5,148.00 under a Rule 10b5-1 trading plan.

Which broker is named in the ARTV Form 144 for the potential sale?

The potential sale of 7,818 shares of Artiva Biotherapeutics, Inc. common stock is listed as being through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, with trading expected on NASDAQ.

On what dates are the ARTV options exercise and RSU vesting related to this Form 144?

The Form 144 indicates an Exercise of Stock Options on August 27, 2026 for 5,183 shares and Restricted Stock Units vesting on May 15, 2026 for 2,635 shares, forming the basis of the securities to be sold.

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

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Available on EDGAR 08/27/2026 - 04:23 PM Accepted by SEC EDGAR 08/27/2026 - 04:19 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	0002065633
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	Artiva Biotherapeutics, Inc.
SEC File Number	001-42179
Address of Issuer	5505 Morehouse Drive, Suite 100 San Diego CALIFORNIA 92121
Phone	8582674467
Name of Person for Whose Account the Securities are To Be Sold	SUBHASHIS BANERJEE
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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	7818	92017.86	48890121	08/27/2026	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	08/27/2026	Exercise of Stock Options	Issuer			5183	08/27/2026	Cash
Common	05/15/2026	Restricted Stock Units	Issuer			2635	05/15/2026	N/A

* 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
10b5-1 Sales for SUBHASHIS BANERJEE 5505 Morehouse Drive, Suite 100 San Diego CA 92121	Common	08/18/2026	429	5148.00

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 05/15/2026 through 09/1/2026.
Date of Notice	08/27/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/14/2026
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/ Subhashis Banerjee
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)