Artiva Biotherapeutics Aslan proposes $246K share sale

The proposed shares are tied to restricted stock units vesting from August 15, 2025, through October 1, 2026.

Rhea-AI Filing Summary

Artiva Biotherapeutics, Inc. (ARTV) reports a proposed sale by Fred Aslan, identified as a director and officer, of 34,465 common shares with an aggregate market value of $245,735.45; the approximate sale date is October 6, 2026, through Morgan Stanley Smith Barney LLC. The shares were or will be acquired upon vesting of restricted stock units during August 15, 2025, through October 1, 2026. A past-three-months section titled “10b5-1 Sales” lists Fred Aslan sales of 23,429 shares for $255,746.28 on September 8, 2026, and 61,888 shares for $690,391.58 on September 3, 2026.

Key Figures

Proposed common shares: 34,465 shares Aggregate market value: $245,735.45 Past sale: 23,429 shares +3 more

6 metrics

Proposed common shares 34,465 shares Proposed sale

Aggregate market value $245,735.45 Proposed sale

Past sale 23,429 shares September 8, 2026

Aggregate market value $255,746.28 Sale on September 8, 2026

Past sale 61,888 shares September 3, 2026

Aggregate market value $690,391.58 Sale on September 3, 2026

Key Terms

Rule 144, Restricted Stock Units, 10b5-1 Sales

3 terms

Rule 144 regulatory

"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 technical

"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.

10b5-1 Sales regulatory

"10b5-1 Sales for FRED ASLAN"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

FAQ

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

How many ARTV shares does Fred Aslan plan to sell?

Fred Aslan's notice covers 34,465 common shares, with an aggregate market value of $245,735.45 and an approximate sale date of October 6, 2026. Morgan Stanley Smith Barney LLC is listed as the broker.

What ARTV sales did Fred Aslan report during the past three months?

The past-three-months sales list reports 23,429 shares for $255,746.28 on September 8, 2026, and 61,888 shares for $690,391.58 on September 3, 2026. The list identifies these as 10b5-1 Sales.

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

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Available on EDGAR 10/06/2026 - 04:22 PM Accepted by SEC EDGAR 10/06/2026 - 04:21 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	0001909362
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	FRED ASLAN
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	Director
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	34465	245735.45	48890121	10/06/2026	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	08/15/2025	Restricted Stock Units	Issuer			34465	08/15/2025	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 FRED ASLAN 5505 Morehouse Drive, Suite 100 San Diego CA 92121	Common	09/08/2026	23429	255746.28
FRED ASLAN 5505 Morehouse Drive, Suite 100 San Diego CA 92121	Common	09/03/2026	61888	690391.58

144: Remarks and Signature

Remarks	The securities to be sold were or will be acquired upon the vesting of restricted stock units during the period of 08/15/2025 through 10/01/2026
Date of Notice	10/06/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/13/2026
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/ Fred Aslan
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)