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SEC Form 4 research

MediaAlpha, Inc. insider transactions

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

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

Issuer CIK
0001818383
Reporting owners
36
Officers and directors
15
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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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2026-10-102026-10-09Yi StevenS2,033$11.01Not reported

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

The displayed observation date is 2026-10-09 and its public availability date is 2026-10-10. Subtracting those calendar dates gives 1 day 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 S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

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.

SEC accession 0001818383-26-000249 ↗SEC accession 0001818383-26-000249 ↗SEC accession 0001818383-26-000247 ↗

Recent insider disclosures

Inspect all 50 displayed rows: 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.

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2026-10-102026-10-09Yi StevenS2,033$11.01Not reported
2026-10-102026-10-08Yi StevenS24,000$10.04Not reported
2026-10-022026-10-01Sinanyan TigranA24,250$0Not reported
2026-09-252026-09-25Yeh Kuanling AmyS3,000$9.4Not reported
2026-09-232026-09-22Nonko EugeneS6,667$10.78Not reported
2026-09-232026-09-21Nonko EugeneS6,667$10.53Not reported
2026-09-232026-09-22Nonko EugeneS1,067$10.79Not reported
2026-09-232026-09-21Nonko EugeneS1,067$10.54Not reported
2026-09-162026-09-15Cramer KeithS13,000$11.49Not reported
2026-09-162026-09-16Nonko EugeneS7,273$11.24Not reported
2026-09-162026-09-15Nonko EugeneS7,273$11.49Not reported
2026-09-162026-09-14Nonko EugeneS7,778$11.96Not reported
2026-09-162026-09-16Nonko EugeneS1,940$11.25Not reported
2026-09-162026-09-15Nonko EugeneS1,940$11.48Not reported
2026-09-162026-09-14Nonko EugeneS2,667$12.03Not reported
2026-09-102026-09-10Nonko EugeneS7,273$11.62Not reported
2026-09-102026-09-09Nonko EugeneS7,273$11.41Not reported
2026-09-102026-09-08Nonko EugeneS7,273$11.7Not reported
2026-09-102026-09-10Nonko EugeneS1,940$11.52Not reported
2026-09-102026-09-09Nonko EugeneS1,940$11.65Not reported
2026-09-102026-09-08Nonko EugeneS1,940$11.7Not reported
2026-09-092026-09-04Yeh Kuanling AmyS3,000$12Not reported
2026-09-032026-09-01Yi StevenS48,000$12.38Not reported
2026-09-032026-09-02Nonko EugeneS7,778$12.25Not reported
2026-09-032026-09-01Nonko EugeneS7,778$12.39Not reported
2026-09-032026-08-31Nonko EugeneS7,778$12.61Not reported
2026-09-032026-09-02Nonko EugeneS2,667$12.22Not reported
2026-09-032026-09-01Nonko EugeneS2,667$12.45Not reported
2026-09-032026-08-31Nonko EugeneS2,667$12.59Not reported
2026-08-272026-08-26Nonko EugeneS7,778$12.55Not reported
2026-08-272026-08-25Nonko EugeneS8,205$12.87Not reported
2026-08-272026-08-24Nonko EugeneS8,205$12.99Not reported
2026-08-272026-08-26Nonko EugeneS2,667$12.56Not reported
2026-08-272026-08-25Nonko EugeneS3,282$12.89Not reported
2026-08-272026-08-24Nonko EugeneS3,282$12.99Not reported
2026-08-202026-08-19Nonko EugeneS8,205$13.23Not reported
2026-08-202026-08-18Nonko EugeneS8,205$12.88Not reported
2026-08-202026-08-17Nonko EugeneS8,205$12.78Not reported
2026-08-202026-08-19Nonko EugeneS3,282$13.2Not reported
2026-08-202026-08-18Nonko EugeneS3,282$12.9Not reported
2026-08-202026-08-17Nonko EugeneS3,282$12.82Not reported
2026-08-182026-08-17Cramer KeithS13,000$12.76Not reported
2026-08-182026-08-14Yeh Kuanling AmyS12,000$13.55Not reported
2026-08-132026-08-12Nonko EugeneS8,205$12.78Not reported
2026-08-132026-08-11Nonko EugeneS8,205$13.24Not reported
2026-08-132026-08-10Nonko EugeneS8,205$13.57Not reported
2026-08-132026-08-12Nonko EugeneS3,282$12.89Not reported
2026-08-132026-08-11Nonko EugeneS3,282$13.36Not reported
2026-08-132026-08-10Nonko EugeneS3,282$13.3Not reported
2026-08-062026-08-05Nonko EugeneS7,778$12.28Not 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 15 displayed rows: Officers and directors in the directory

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Nonko Eugene0001830016222
WHITE MOUNTAINS INSURANCE GROUP LTD00007768677
Cramer Keith000182998925
COYNE JEFFREY B000121318412
Thompson Patrick Ryan00018973864
VRABECK KATHY P000109316610
Martinez Lance00018296702
Mikalis Brian000182996013
Perine Robert00018299459
Sinanyan Tigran000183000327
Sweetser Jeff00018300199
Topjian Serge00018298879
Wang Ambrose00018298854
Yeh Kuanling Amy000182996929
Yi Steven0001829946134
Nonko Eugene ↗WHITE MOUNTAINS INSURANCE GROUP LTD ↗Cramer Keith ↗COYNE JEFFREY B ↗Thompson Patrick Ryan ↗VRABECK KATHY P ↗Martinez Lance ↗Mikalis Brian ↗Perine Robert ↗Sinanyan Tigran ↗Sweetser Jeff ↗Topjian Serge ↗Wang Ambrose ↗Yeh Kuanling Amy ↗Yi Steven ↗

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.

This issuer meets the currently published company-strategy eligibility rules.

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