A10 Networks counsel sells 14,086 shares under plan

A10 Networks, Inc. General Counsel Robert Scott Weber reported selling 14,086 shares of common stock on August 11, 2026 in an open-market transaction at a weighted average price of $27.86 per share, with individual sale prices ranging from $27.55 to $28.46.

Rhea-AI Filing Summary

A10 Networks, Inc. General Counsel Robert Scott Weber reported selling 14,086 shares of common stock on August 11, 2026 in an open-market transaction at a weighted average price of $27.86 per share, with individual sale prices ranging from $27.55 to $28.46. The sales were effected pursuant to a Rule 10b5-1 trading plan adopted on May 9, 2026, and Weber now directly holds 50,586 shares of A10 Networks common stock.

Insider Trade Summary 10b5-1

Net Seller: 14,086 shares

Net Sell 1 txn

Insider Weber Robert Scott

Role General Counsel

Sold 14,086 shs ($392K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	14,086	$27.86	$392K

Holdings After Transaction: Common Stock — 50,586 shares (Direct)

Footnotes (2)

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 9, 2026.
2. F2. This is the weighted average price of the shares sold, which ranged from $27.55 to $28.46 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: 14,086 shares Weighted average sale price: $27.86 per share Sale price range: $27.55–$28.46 per share +2 more

5 metrics

Shares sold 14,086 shares Common stock sold by General Counsel on August 11, 2026

Weighted average sale price $27.86 per share Weighted average price for the 14,086 shares sold

Sale price range $27.55–$28.46 per share Price range of individual trades included in the reported sale

Shares owned after transaction 50,586 shares Direct holdings of Robert Scott Weber following the sale

Rule 10b5-1 plan adoption date May 9, 2026 Adoption date of the trading plan governing the reported sale

Key Terms

Rule 10b5-1 trading plan, weighted average price, open market or private transaction

3 terms

Rule 10b5-1 trading plan regulatory

"The sales ... were effected pursuant to a Rule 10b5-1 trading plan adopted..."

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.

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.

open market or private transaction financial

"Sale in open market or private transaction"

FAQ

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

What insider transaction did A10 Networks (ATEN) report for Robert Scott Weber?

A10 Networks reported that General Counsel Robert Scott Weber sold 14,086 shares of common stock on August 11, 2026 in an open-market transaction under a Rule 10b5-1 trading plan, leaving him with 50,586 shares directly owned.

At what price did the ATEN General Counsel sell his shares?

The General Counsel’s sale used a weighted average price of $27.86 per share. According to the disclosure, the individual trades occurred in a price range from $27.55 to $28.46 per share, with full trade details available upon request.

How many A10 Networks (ATEN) shares does Robert Scott Weber hold after the sale?

After the reported transaction, Robert Scott Weber directly holds 50,586 shares of A10 Networks common stock. This figure reflects his position following the 14,086-share sale executed on August 11, 2026 under his trading plan.

Was the ATEN insider sale made under a Rule 10b5-1 trading plan?

Yes. The company disclosed that the sales were effected under a Rule 10b5-1 trading plan adopted by Robert Scott Weber on May 9, 2026. Such plans pre-schedule trades, helping separate trading decisions from later market-sensitive information.

How many A10 Networks (ATEN) shares did the insider sell in this Form 4?

The filing reports that the insider sold 14,086 shares of A10 Networks common stock. These shares were sold in the open market at prices between $27.55 and $28.46 per share, resulting in a weighted average sale price of $27.86.

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

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Available on EDGAR 08/12/2026 - 04:26 PM Accepted by SEC EDGAR 08/12/2026 - 04:25 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^*

Weber Robert Scott

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/11/2026

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	08/11/2026		S		14,086(1)	D	$27.86(2)	50,586	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 9, 2026.

2. This is the weighted average price of the shares sold, which ranged from $27.55 to $28.46 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	08/12/2026
	** 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)