Artiva officer plans sale of 833 shares in August

Artiva Biotherapeutics, Inc. (ARTV) received a notice that officer Subhashis Banerjee intends to sell Artiva common stock under Rule 144.

Rhea-AI Filing Summary

Artiva Biotherapeutics, Inc. (ARTV) received a notice that officer Subhashis Banerjee intends to sell Artiva common stock under Rule 144. The planned sale involves 833 shares, expected to be sold on or about 08/18/2026, with the shares to be obtained through the exercise of stock options for cash. A broker, Morgan Stanley Smith Barney LLC Executive Financial Services, is listed as the executing firm. Banerjee previously sold 7,037 shares of Artiva common stock on 05/19/2026. The notice states that additional shares will be received and sold upon option exercises over the next three months.

Key Figures

Planned shares to be sold: 833 shares Approximate aggregate market value of planned sale: 9,779.42 Shares sold in past 3 months: 7,037 shares +3 more

6 metrics

Planned shares to be sold 833 shares Common stock to be sold around 08/18/2026 under Rule 144

Approximate aggregate market value of planned sale 9,779.42 Value associated with 833 shares of common stock listed for sale

Shares sold in past 3 months 7,037 shares Common stock sold on 05/19/2026 by Subhashis Banerjee

Proceeds from prior sale 63,386.48 Total value of 7,037 shares of common stock sold on 05/19/2026

Planned sale date 08/18/2026 Date associated with proposed sale of 833 shares of common stock

Date of prior sale 05/19/2026 Date of sale for 7,037 shares of common stock

Key Terms

Rule 144, Securities To Be Sold, Exercise of Stock Options, Rule 144 notice

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.

Securities To Be Sold financial

"144: Securities To Be Sold Common | 08/18/2026 | Exercise of Stock Options"

Exercise of Stock Options financial

"Common | 08/18/2026 | Exercise of Stock Options | Issuer"

Rule 144 notice regulatory

"Information is to be given not only as to the person for whose account the securities are to be sold"

A Rule 144 notice is a public filing that an insider or holder of restricted stock submits when they plan to sell shares that aren’t freely tradable yet; it lists how many shares they intend to sell and under what conditions. For investors, it matters because it signals potential insider selling and an upcoming increase in shares available to the market—similar to someone announcing a big garage sale, which can affect supply and price expectations.

FAQ

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

What insider sale is disclosed for Artiva Biotherapeutics (ARTV) in this Rule 144 notice?

The notice discloses that officer Subhashis Banerjee intends to sell 833 shares of Artiva Biotherapeutics common stock around 08/18/2026. These shares will be acquired through the exercise of stock options for cash before being sold.

How many Artiva Biotherapeutics (ARTV) shares has Subhashis Banerjee sold recently?

Over the past three months, Subhashis Banerjee sold 7,037 Artiva common shares on 05/19/2026 for total proceeds of 63,386.48. This sale is separate from the newly planned 833-share sale disclosed in the current notice.

What is the approximate market value of the Artiva (ARTV) shares planned for sale?

The planned sale of 833 shares of Artiva common stock is associated with an approximate aggregate market value of 9,779.42. This value is tied to the shares listed for sale through Morgan Stanley Smith Barney LLC Executive Financial Services.

How will the Artiva Biotherapeutics (ARTV) shares be obtained for the planned Rule 144 sale?

The notice states the shares "were and will be received upon the exercise of stock options" with payment in cash. The dates of acquisition and payment are described as the same as the dates of exercise and sale over the next three months.

Which broker is handling the planned Artiva (ARTV) stock sale under Rule 144?

The planned sale of 833 Artiva common shares is listed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, in the Rule 144 disclosure.

What does the Rule 144 notice indicate about future Artiva (ARTV) stock sales by Banerjee?

The remarks indicate that securities "were and will be received upon the exercise of stock options over the next three months." This suggests additional option exercises and related sales may occur within that period, consistent with Rule 144 disclosure requirements.

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

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Accepted by SEC EDGAR 08/18/2026 - 04:30 PM EDT 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	833	9779.42	48890121	08/18/2026	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	08/18/2026	Exercise of Stock Options	Issuer			833	08/18/2026	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
SUBHASHIS BANERJEE 5505 Morehouse Drive, Suite 100 San Diego CA 92121	Common	05/19/2026	7037	63386.48

144: Remarks and Signature

Remarks	The securities to be sold were and will be received upon the exercise of stock options over the next three months. The dates of acquisition and payment were and will be the dates of exercise/sale.
Date of Notice	08/18/2026
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)