Artiva Biotherapeutics medical chief sells 1,099 shares

The automatic sale covered tax-withholding obligations tied to the vesting and release of restricted stock units.

Rhea-AI Filing Summary

Artiva Biotherapeutics, Inc. (ARTV) Chief Medical Officer Subhashis Banerjee sold 1,099 common shares on October 5, 2026, at $6.8372 per share. The sale was automatic under the issuer’s sell-to-cover policy to meet tax-withholding obligations tied to the vesting and release of restricted stock units; it was not at Banerjee’s discretion. He held 169,848 shares directly after the sale. No Rule 10b5-1 plan is reported.

Insider Trade Summary

Net Seller: 1,099 shares

Net Sell 1 txn

Insider Banerjee Subhashis

Role Chief Medical Officer

Sold 1,099 shs ($8K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	1,099	$6.8372	$8K

Holdings After Transaction: Common Stock — 169,848 shares (Direct)

Footnotes (1)

1. F1. The Issuer has adopted a 'sell-to-cover' policy to satisfy the tax withholding obligations of the Reporting Person. 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 and release of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

Key Figures

Common shares sold: 1,099 shares Sale price: $6.8372 per share Direct shares following sale: 169,848 shares

3 metrics

Common shares sold 1,099 shares October 5, 2026

Sale price $6.8372 per share October 5, 2026

Direct shares following sale 169,848 shares Reported after the October 5, 2026 transaction

Key Terms

sell-to-cover policy, tax withholding obligations, restricted stock units

3 terms

sell-to-cover policy financial

"The Issuer has adopted a 'sell-to-cover' policy"

tax withholding obligations financial

"to satisfy the tax withholding obligations"

restricted stock units financial

"vesting and release 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.

FAQ

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

How many ARTV shares did Subhashis Banerjee sell, and at what price?

Subhashis Banerjee sold 1,099 shares of Artiva Biotherapeutics common stock at $6.8372 per share on October 5, 2026. The sale was automatic under the issuer’s sell-to-cover policy for tax withholding tied to restricted stock unit vesting and release, and was not at his discretion. No Rule 10b5-1 plan is reported.

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

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Available on EDGAR 10/06/2026 - 04:02 PM Accepted by SEC EDGAR 10/06/2026 - 04:02 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^*

Banerjee Subhashis

(Last) (First) (Middle)

C/O ARTIVA BIOTHERAPEUTICS, INC.

5505 MOREHOUSE DRIVE, SUITE 100

(Street)

SAN DIEGO CALIFORNIA 92121

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Artiva Biotherapeutics, Inc. [ ARTV ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Medical Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/05/2026

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	10/05/2026		S		1,099(1)	D	$6.8372	169,848	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 Issuer has adopted a 'sell-to-cover' policy to satisfy the tax withholding obligations of the Reporting Person. 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 and release of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person.

	/s/ Jennifer Bush, Attorney-in-Fact	10/06/2026
	** 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)