A10 Networks director sells 24,698 company shares

A10 Networks director Eric Singer sold shares in the company.

Rhea-AI Filing Summary

A10 Networks director Eric Singer sold shares in the company. On this Form 4, he reported an open-market sale of 24,698 shares of A10 Networks common stock at a weighted average price of $27.21 per share, with individual sale prices ranging from $26.88 to $27.41. After the transaction, he directly holds 68,806 shares.

Insights

Insider transactions analyst

A10 Networks director executes a notable open-market share sale.

Director Eric Singer reported an open-market sale of 24,698 shares of A10 Networks common stock at a weighted average price of $27.21 per share, with trades occurring between $26.88 and $27.41. This is a discretionary sale, not a tax or grant event.

Following the sale, Singer directly holds 68,806 shares, so he retains a sizeable equity position even after disposing of part of his stake. The filing does not reference any Rule 10b5-1 trading plan, and no derivative holdings are listed in this report, suggesting the visible position is entirely in common stock.

The scale of the sale is meaningful relative to his holdings but is limited to one transaction and one security. Future company filings would be needed to understand whether this is part of a broader trading pattern or a one-off liquidity event.

Insider Trade Summary

Net Seller: 24,698 shares

Net Sell 1 txn

Insider Singer Eric

Role Director

Sold 24,698 shs ($672K)

Type	Security	Shares	Price	Value
Sale	Common Stock	24,698	$27.21	$672K

Holdings After Transaction: Common Stock — 68,806 shares (Direct)

Footnotes (1)

1. F1. This is the weighted average price of the shares sold, which ranged from $26.88 to $27.41 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Key Figures

Shares sold: 24,698 shares Weighted average sale price: $27.21 per share Sale price range: $26.88–$27.41 per share +1 more

4 metrics

Shares sold 24,698 shares Open-market sale of A10 Networks common stock

Weighted average sale price $27.21 per share Average price for 24,698 shares sold

Sale price range $26.88–$27.41 per share Range of prices for reported share sales

Shares held after transaction 68,806 shares Direct ownership after the reported sale

Key Terms

open-market sale, weighted average price, Common Stock, Form 4

4 terms

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average price financial

"This is the weighted average price of the shares sold, which ranged"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Common Stock financial

""security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 regulatory

"within the range set forth in this Form 4."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What did A10 Networks (ATEN) director Eric Singer report in this Form 4 filing?

Eric Singer reported an open-market sale of A10 Networks common stock. He sold 24,698 shares at a weighted average price of $27.21 per share, with individual prices ranging from $26.88 to $27.41, and continued to hold 68,806 shares afterward.

How many A10 Networks (ATEN) shares did Eric Singer sell and at what price range?

Eric Singer sold 24,698 shares of A10 Networks common stock. The weighted average sale price was $27.21 per share, with individual trades executed in a price range between $26.88 and $27.41 per share as disclosed in the Form 4 footnote.

How many A10 Networks (ATEN) shares does Eric Singer hold after this reported sale?

After the reported transaction, Eric Singer directly holds 68,806 shares of A10 Networks common stock. This figure, disclosed in the Form 4, reflects his remaining direct ownership position following the 24,698-share open-market sale on the reported transaction date.

Was Eric Singer’s A10 Networks (ATEN) trade an open-market sale or another type of transaction?

The Form 4 classifies Eric Singer’s transaction as an open-market sale of common stock. It is coded as a sale (transaction code "S") and described as a sale in open market or private transaction, rather than a grant, option exercise, gift, or tax-withholding event.

Does Eric Singer have any derivative securities reported in this A10 Networks (ATEN) Form 4?

This Form 4 does not list any derivative securities for Eric Singer. The filing shows only a non-derivative transaction in A10 Networks common stock, and the derivative summary section is empty, indicating no options or other derivatives are reported in this particular filing.

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

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Accepted by SEC EDGAR 05/06/2026 - 09:32 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^*

Singer Eric

(Last) (First) (Middle)

C/O A10 NETWORKS, INC.

2300 ORCHARD PARKWAY

(Street)

SAN JOSE CALIFORNIA 95131

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
A10 Networks, Inc. [ ATEN ]

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

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

2a. Foreign Trading Symbol

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

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	05/05/2026		S		24,698	D	$27.21(1)	68,806	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. This is the weighted average price of the shares sold, which ranged from $26.88 to $27.41 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

Remarks:

	/s/ Jill Osato, Attorney-in-fact	05/06/2026
	** 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)