A10 Networks (ATEN) director sells shares under 10b5-1 plan

Rhea-AI Filing Summary

A10 Networks, Inc. (ATEN) director Dana Elizabeth Wolf reported selling 2,652 shares of common stock on 2026-08-25 at $25.65 per share in an open-market or private transaction. After this sale, Wolf directly holds 57,409 shares of A10 Networks common stock. The sale was effected under a Rule 10b5-1 trading plan adopted on May 15, 2026.

Insider Trade Summary 10b5-1

Net Seller: 2,652 shares

Net Sell 1 txn

Insider Wolf Dana Elizabeth

Role Director

Sold 2,652 shs ($68K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	2,652	$25.65	$68K

Holdings After Transaction: Common Stock — 57,409 shares (Direct)

Footnotes (1)

1. F1. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 15, 2026.

Key Figures

Shares sold: 2,652 shares Sale price per share: $25.65 per share Shares held after transaction: 57,409 shares

3 metrics

Shares sold 2,652 shares Common Stock sold on 2026-08-25

Sale price per share $25.65 per share Price for the 2,652 shares sold on 2026-08-25

Shares held after transaction 57,409 shares Direct ownership of Common Stock following the sale

Key Terms

Rule 10b5-1 trading plan, Form 4, open market or private transaction

3 terms

Rule 10b5-1 trading plan regulatory

"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

Form 4 regulatory

"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1"

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.

open market or private transaction financial

"transaction_code_description: Sale in open market or private transaction"

FAQ

What insider transaction did ATEN director Dana Elizabeth Wolf report on this Form 4?

Dana Elizabeth Wolf reported a sale of 2,652 shares of A10 Networks (ATEN) common stock on 2026-08-25 in an open-market or private transaction at $25.65 per share, as disclosed in the Form 4.

How many ATEN shares does Dana Elizabeth Wolf hold after this reported sale?

After the reported transaction, Dana Elizabeth Wolf directly holds 57,409 shares of A10 Networks (ATEN) common stock, according to the post-transaction ownership figure in the Form 4.

Was the ATEN insider sale by Dana Elizabeth Wolf made under a Rule 10b5-1 plan?

Yes. The Form 4 states that the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Dana Elizabeth Wolf on May 15, 2026, indicating the trades were pre-arranged under that plan.

What was the sale price per share in Dana Elizabeth Wolf’s ATEN transaction?

The reported sale price was $25.65 per share for the 2,652 shares of A10 Networks (ATEN) common stock sold on 2026-08-25, as indicated in the transaction details.

What type of security was involved in Dana Elizabeth Wolf’s Form 4 filing for ATEN?

The transaction involved Common Stock of A10 Networks (ATEN). The Form 4 reports a non-derivative transaction, specifically a sale of 2,652 common shares under a Rule 10b5-1 trading plan.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/25/2026 - 04:08 PM Accepted by SEC EDGAR 08/25/2026 - 04:07 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).

X

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^*

Wolf Dana Elizabeth

(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)
08/25/2026

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	08/25/2026		S		2,652(1)	D	$25.65	57,409	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 sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 15, 2026.

Remarks:

	/s/ Jill Osato, Attorney-in-fact	08/25/2026
	** 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)