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SEC Form 4 research

A10 Networks, Inc. insider transactions

Inspect A10 Networks, Inc.'s public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001580808
Reporting owners
46
Officers and directors
25
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-10-072026-10-05Henry Mary CA7,981$0Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-05 and its public availability date is 2026-10-07. Subtracting those calendar dates gives 2 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 3 rows, 7 columns

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2026-10-072026-10-05Henry Mary CA7,981$0Not reported
2026-08-262026-08-25Wolf Dana ElizabethS2,652$25.65Not reported
2026-08-132026-08-11Weber Robert ScottS14,086$27.86Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 30 displayed rows: Officers and directors in the directory

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Summit Investors I, LLC000143556524
SUMMIT PARTNERS L P000083058874
BRUENING MATTHEW P000118861131
Becker Brian000182609537
Becker Neil Wu00016706743
CHEN LEE000120612469
CHUNG PETER Y000123936639
COCHRAN ROBERT D000135872158
Constantino Thomas00017083906
Henricks Alan S.000151395779
MANNION MARTIN J000101806742
Natarajan Shiva Kumar000142599224
Reiss Gunter000172059624
SALSBURY PHILLIP J00013586893
Singer Eric0001443284172
SMETS RAYMOND J00012361944
Summit Investors I (UK), L.P.000149461624
Summit Partners Growth Equity Fund VIII-A, L.P.00015143863
Summit Partners Growth Equity Fund VIII-B, L.P.00015143883
Thomas Karen S.00019928421
Trivedi Dhrupad000157046262
VIEX Capital Advisors, LLC000161912570
VIEX GP, LLC000165485269
VIEX Opportunities Fund, LP - Series Two000165940452
VIEX Opportunities Fund, LP Series One000160675099
VIEX Special Opportunities Fund II, LP000161912764
VIEX Special Opportunities Fund III, LP000161912612
Weber Robert Scott00019361287
White Christopher P.00017265632
Wolf Dana Elizabeth00019315551

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.