ATEN Form 144: Proposed resale of 24,698 common shares

ATEN notice filed on Form 144 reporting proposed sales of Common stock totaling 24,698 shares.

Accepted by SEC EDGAR 05/05/2026 - 05:19 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

ATEN notice filed on Form 144 reporting proposed sales of Common stock totaling 24,698 shares. The filing lists two restricted stock lots: 12,000 shares dated 04/17/2025 and 12,698 shares dated 04/17/2026. The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services and the filing date shown is 05/05/2026.

Insights

Securities Compliance Analyst

Rule 144 notice reporting proposed resale of restricted common shares.

The filing lists proposed offers of 24,698 shares of Common stock through a broker-dealer, with two restricted stock lots dated 04/17/2025 and 04/17/2026. It appears procedural: a broker-handled resale notice on Form 144.

Cash‑flow treatment and purchaser details are not specified in the excerpt; subsequent Form 4 or trade reports would show completed transactions and final proceeds.

Key Figures

Total shares listed: 24,698 shares Restricted stock lot 1: 12,000 shares Restricted stock lot 2: 12,698 shares +2 more

5 metrics

Total shares listed 24,698 shares listed on Form 144 excerpt

Restricted stock lot 1 12,000 shares acquired 04/17/2025

Restricted stock lot 2 12,698 shares acquired 04/17/2026

Numeric field shown $672,062.22 numeric value present on the same line as share totals

Numeric field shown 71,724,984 numeric value present on the same line as share totals

Key Terms

Restricted Stock, Form 144, Broker‑Dealer

3 terms

Restricted Stock financial

"Restricted Stock | Issuer | 12000 | 04/17/2025"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Form 144 regulatory

"144: Securities To Be Sold"

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.

Broker‑Dealer financial

"Morgan Stanley Smith Barney LLC Executive Financial Services"

FAQ

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

What does the ATEN Form 144 report?

The filing reports a proposed resale of 24,698 shares of Common stock on Form 144. It lists two restricted-stock lots of 12,000 and 12,698 shares dated 04/17/2025 and 04/17/2026 respectively.

Who is the broker handling the proposed ATEN sale?

The broker-dealer shown is Morgan Stanley Smith Barney LLC Executive Financial Services. The broker's address and NYSE listing are included in the form excerpt; the filing indicates the broker will handle the proposed resale transactions.

When was the ATEN Form 144 filed?

The excerpt shows a filing date of 05/05/2026. The restricted-stock lot dates reported are 04/17/2025 and 04/17/2026, which correspond to the security acquisition dates listed on the form.

Does the Form 144 disclose proceeds or completed trades for ATEN?

The provided excerpt lists numeric fields such as 672,062.22 and 71,724,984 but does not state completed transaction proceeds. Form 144 is a notice of proposed sale; completion and proceeds would appear in subsequent trade or reporting records.

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

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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	0001443284
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	A10 NETWORKS, INC.
SEC File Number	001-36343
Address of Issuer	2300 Orchard Parkway, San Jose CALIFORNIA 95131
Phone	(408) 325-8668
Name of Person for Whose Account the Securities are To Be Sold	ERIC SINGER
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

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	24698	672062.22	71724984	05/05/2026	NYSE

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	04/17/2025	Restricted Stock	Issuer			12000	04/17/2025	Not Applicable
Common	04/17/2026	Restricted Stock	Issuer			12698	04/17/2026	Not Applicable

* 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
Date of Notice	05/05/2026
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/ Eric Singer
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)