A10 Networks director receives 7,233 RSUs

Braham Tor reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Braham Tor reported acquisition or exercise transactions in this Form 4 filing.

A10 Networks, Inc. director Braham Tor reported receiving an equity award of 7,233 shares of Common Stock in the form of Restricted Stock Units. The award carried a price of $0.00 per share, indicating a compensation-related grant rather than an open-market purchase.

These RSUs will vest on the earlier of April 22, 2027 or the date of A10 Networks’ next Annual Meeting, provided Tor continues to serve through that vesting date. Following this grant, Tor directly holds a total of 192,812 shares of A10 Networks common stock.

Insider Trade Summary

Grant/Award: 7,233 shares

Grant/Award 1 txn

Insider Braham Tor

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	7,233	$0.00	$0.00

Holdings After Transaction: Common Stock — 192,812 shares (Direct)

Footnotes (1)

1. F1. Each share is represented by a Restricted Stock Unit ("RSU"). The RSUs will vest on the earlier of April 22, 2027 or the date of the Issuer's next Annual Meeting, provided that the Reporting Person continues to serve through each such vesting date.

Key Figures

RSU grant size: 7,233 shares Grant price: $0.00 per share Post-grant holdings: 192,812 shares +1 more

4 metrics

RSU grant size 7,233 shares Restricted Stock Units granted on April 22, 2026

Grant price $0.00 per share Transaction price for RSU award

Post-grant holdings 192,812 shares Total common shares held after the transaction

Vesting date April 22, 2027 Latest possible vesting date, earlier of this or next Annual Meeting

Key Terms

Restricted Stock Unit ("RSU"), vest, Annual Meeting

3 terms

Restricted Stock Unit ("RSU") financial

"Each share is represented by a Restricted Stock Unit ("RSU")."

vest financial

"The RSUs will vest on the earlier of April 22, 2027 or the date of the Issuer's next Annual Meeting"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

Annual Meeting regulatory

"on the earlier of April 22, 2027 or the date of the Issuer's next Annual Meeting"

A company's annual meeting is a yearly gathering where owners (shareholders) and the board review performance, ask questions, and vote on key matters like electing directors, approving auditor choices, and sometimes setting pay or dividend policies. For investors it matters because decisions made and votes cast can change who runs the company, influence strategy and payouts, and affect the value or direction of their investment—similar to a homeowners’ meeting where rules and leaders that shape your property’s value are decided.

FAQ

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

What did the A10 Networks (ATEN) Form 4 filing report for Braham Tor?

The Form 4 shows director Braham Tor received 7,233 shares of A10 Networks common stock via a restricted stock unit grant, at a price of $0.00 per share, as part of his equity-based compensation, rather than as an open-market stock purchase.

How many A10 Networks (ATEN) RSUs were granted to Braham Tor?

Braham Tor was granted 7,233 Restricted Stock Units, each representing one share of A10 Networks common stock. The award is recorded at a transaction price of $0.00 per share, consistent with a standard director equity compensation grant rather than a cash purchase transaction.

When do Braham Tor’s A10 Networks (ATEN) RSUs vest?

The RSUs granted to Braham Tor vest on the earlier of April 22, 2027 or the date of A10 Networks’ next Annual Meeting, provided he continues to serve through that vesting date, aligning vesting with the company’s director service period and governance calendar.

Did Braham Tor buy A10 Networks (ATEN) shares on the open market?

No, the filing shows a grant coded as a compensation-related acquisition, not an open-market purchase. The 7,233 shares were awarded at $0.00 per share as Restricted Stock Units, reflecting equity compensation for board service rather than a discretionary stock buy.

What is Braham Tor’s total A10 Networks (ATEN) holding after this RSU grant?

After receiving the 7,233-share RSU award, Braham Tor directly holds 192,812 shares of A10 Networks common stock. This total reflects his updated ownership position reported in the filing following the grant, providing context for the scale of this compensation award.

What service condition is attached to Braham Tor’s A10 Networks (ATEN) RSUs?

The RSUs vest only if Braham Tor continues to serve through each potential vesting date, which is the earlier of April 22, 2027 or the company’s next Annual Meeting. This links his equity compensation to ongoing service as a director of A10 Networks.

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

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Accepted by SEC EDGAR 04/23/2026 - 04:20 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^*

Braham Tor

(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)
04/22/2026

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	04/22/2026		A		7,233(1)	A	$0	192,812	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. Each share is represented by a Restricted Stock Unit ("RSU"). The RSUs will vest on the earlier of April 22, 2027 or the date of the Issuer's next Annual Meeting, provided that the Reporting Person continues to serve through each such vesting date.

Remarks:

	/s/ Jill Osato, Attorney-in-fact	04/22/2026
	** 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)