[Form 3] A10 Networks, Inc. Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

A10 Networks (ATEN) Form 3 filed by Michelle Elizabeth Caron, Chief Financial Officer, reports no securities beneficially owned as of the reporting event. The filing is an initial statement under Section 16 and lists the reporter's San Jose address and role as an officer and director. The form includes an exhibit noting a power of attorney and is signed by an attorney-in-fact on behalf of the reporting person.

Positive

• Form 3 was timely filed documenting initial Section 16 reporting compliance
• Identifies the reporting person and role (Chief Financial Officer), improving transparency

Negative

• None.

Insights

Financial Analyst

TL;DR: Routine initial Form 3 filing; absence of holdings means no immediate insider ownership signal.

The Form 3 documents an officer's initial Section 16 filing and explicitly states that the reporting person does not beneficially own any securities of A10 Networks at the time of the event. For investors and analysts, this is a neutral disclosure: it records compliance with reporting rules but provides no information on holdings, trades, or changes to ownership that would affect valuation or signaling. The filing includes a power of attorney and a third-party signature, which are administrative details confirming the form's execution.

Corporate Governance Expert

TL;DR: Governance disclosure is complete and routine; no material governance concern apparent.

The disclosure identifies the reporting person as the CFO and indicates an initial Section 16 filing with no beneficial ownership. From a governance perspective, the filing meets disclosure requirements and flags no immediate conflicts of interest or insider transactions. The presence of Exhibit 24 (power of attorney) and an attorney-in-fact signature suggests standard administrative handling rather than substantive governance action. This is a non-impactful filing for shareholder oversight.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Caron Michelle Elizabeth

(Last) (First) (Middle)

2300 ORCHARD PARKWAY

(Street)

SAN JOSE CA 95131

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
09/24/2025

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

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

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

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney

No securities are beneficially owned.

	/s/ Jill Osato, as Attorney-in-Fact	09/26/2025
	** 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 5 (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.

FAQ

What does A10 Networks' (ATEN) Form 3 filed by Michelle Caron report?

The Form 3 reports that Michelle Elizabeth Caron, the company's Chief Financial Officer, filed an initial Section 16 statement and stated she beneficially owns no securities of A10 Networks as of the reporting event.

Does the Form 3 show any insider transactions for ATEN?

No. The filing contains no purchases, sales, or derivative holdings; it explicitly states that no securities are beneficially owned.

Who signed the Form 3 for the reporting person?

The form is signed by Jill Osato, as Attorney-in-Fact, indicating the filing was executed by an authorized representative on behalf of the reporting person.

Is there any material exhibit attached to the Form 3 for ATEN?

Yes. The filing lists Exhibit 24 — Power of Attorney, which is an administrative document authorizing signature by an agent.

Does this Form 3 change the investment picture for ATEN shareholders?

No. The filing is administrative and does not disclose any holdings or transactions that would materially affect investor analysis.