ARTV files notice to sell 7,000 shares

ARTV reported a proposed sale of 7,000 shares of Common Stock under Rule 144.

Rhea-AI Filing Summary

ARTV reported a proposed sale of 7,000 shares of Common Stock under Rule 144. The filing lists these shares as Restricted Stock Units vesting under a registered plan on 05/15/2026 and identifies Morgan Stanley Smith Barney LLC as broker.

The excerpt also shows 64,540 shares sold in the past three months and a separate figure of 48,588,198 tied to the filing line dated 05/18/2026.

Insights

Equity Capital Markets Analyst

Routine Rule 144 notice for a small planned sale of vested RSUs.

The filing lists a proposed sale of 7,000 shares attributable to Restricted Stock Units vesting under a registered plan on 05/15/2026. Brokerage arrangements name Morgan Stanley Smith Barney LLC as the executing broker.

Timing and exact execution method are not specified in the excerpt; subsequent transaction reports will show whether the planned sale occurred and the actual volumes transacted.

Key Figures

Planned sale: 7,000 shares Sold in past 3 months: 64,540 shares Listed figure: 48,588,198

3 metrics

Planned sale 7,000 shares Securities to be sold; RSUs vesting under registered plan on 05/15/2026

Sold in past 3 months 64,540 shares Securities sold during the past three months (section entry in excerpt)

Listed figure 48,588,198 Number shown in securities information with date 05/18/2026 and NASDAQ reference

Key Terms

Restricted Stock Units, Form 144, registered plan

3 terms

Restricted Stock Units financial

"Restricted Stock Units vesting under registered plan"

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.

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

registered plan financial

"Restricted Stock Units vesting under registered plan"

A registered plan is a savings or investment account that a government recognizes for special tax treatment and rules, such as limits on how much you can put in and conditions for withdrawals. For investors it matters because those rules change how much of your gains are taxed, how quickly your money can be accessed and what strategies make sense — like a labeled jar that gives tax breaks but comes with rules about when and how you can take the money out.

FAQ

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

What does ARTV's Form 144 disclose about the planned sale?

The Form 144 discloses a proposed sale of 7,000 shares of Common Stock tied to RSUs vesting on 05/15/2026. It lists Morgan Stanley Smith Barney LLC as the broker for the transaction.

Does the filing show recent insider selling activity for ARTV?

Yes. The excerpt lists 64,540 shares under "Securities Sold During The Past 3 Months." This indicates prior dispositions reported in the same filing section.

Are the 7,000 shares part of compensation or an open‑market sale for ARTV?

The 7,000 shares are identified as Restricted Stock Units vesting under a registered plan, described as compensation for services rendered to the issuer, not a secondary holder resale.

What does the figure 48,588,198 represent in the ARTV excerpt?

The excerpt shows 48,588,198 on the same line with a 05/18/2026 and NASDAQ reference. The filing presents this number as part of the securities information section without additional labeling in the provided text.

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

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Accepted by SEC EDGAR 05/18/2026 - 07:49 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	(858) 267-4467
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
Relationship to Issuer	Director

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 Stock	Morgan Stanley Smith Barney LLC 1 New York Plaza, 8th Floor New York NY 10004	7000	64540	48588198	05/18/2026	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 Stock	05/15/2026	Restricted Stock Units vesting under registered plan	Issuer			7000	05/15/2026	Compensation for services rendered to Issuer

* 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

Nothing to Report

144: Remarks and Signature

Remarks	This is a sell-to-cover transaction for taxes owed related to recent vesting of stock unit awards granted by the Issuer.
Date of Notice	05/18/2026
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)