MediaAlpha, Inc. (MAX) has 20 known insider and institutional holders on record. The largest holder is WHITE MOUNTAINS INSURANCE GROUP LTD with 17,856,614 shares. Other notable holders include WM Birkdale, Ltd. and WM Hinson (Bermuda) Ltd..
Over the last 12 months, insiders have made 156 transactions in MAX stock — 13 buys (valued at $297.58K) and 118 sells (valued at $8.97M). Insider selling has exceeded buying during this period.
MAX Insider Ownership
Top Holder
WHITE MOUNTAINS INSURANCE GROUP LTD
17,856,614 shares
Buys (12 mo)
13
$297.58K value
Sells (12 mo)
118
$8.97M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
White Mountains Insurance Group Ltd |
10 Percent Owner |
17,856,614 |
2024-05-09 |
|
| 2 |
Wm Birkdale, Ltd. |
Director |
16,039,998 |
2022-12-23 |
|
| 3 |
Wm Hinson (bermuda) Ltd. |
10 Percent Owner |
5,916,816 |
2023-06-30 |
|
| 4 |
Yi Steven |
See Remarks |
3,039,247 |
2026-04-01 |
|
| 5 |
Insignia Capital Partners Gp, L.l.c. |
10 Percent Owner |
2,589,800 |
2024-05-13 |
|
| 6 |
Kopko Frederick H Jr |
10 Percent Owner |
1,244,825 |
2006-01-10 |
|
| 7 |
Nonko Eugene |
Director |
1,059,400 |
2026-03-17 |
|
| 8 |
Yeh Kuanling Amy |
Chief Technology Officer |
577,879 |
2026-03-27 |
|
| 9 |
Vrabeck Kathy P |
Director |
129,657 |
2025-08-13 |
|
| 10 |
Arasu Venmal (raji) |
Director |
98,657 |
2025-05-16 |
|
| 11 |
Sweet Lara |
Director |
98,657 |
2025-05-16 |
|
| 12 |
Thompson Patrick Ryan |
See Remarks |
84,750 |
2026-03-17 |
|
| 13 |
Coyne Jeffrey B |
General Counsel and Secretary |
57,350 |
2026-03-17 |
|
| 14 |
Cramer Keith |
Chief Revenue Officer |
44,900 |
2026-03-17 |
|
| 15 |
Perine Robert |
Vice President, Product |
39,869 |
2021-11-03 |
|
| 16 |
Wang Ambrose |
Co-founder |
38,839 |
2021-08-03 |
|
| 17 |
Sinanyan Tigran |
See Remarks |
38,279 |
2021-09-21 |
|
| 18 |
Sweetser Jeff |
See Remarks |
35,183 |
2021-11-03 |
|
| 19 |
Michael Janowiak |
Director |
30,000 |
2005-02-03 |
|
| 20 |
Hunt Bradley William |
Director |
25,450 |
2025-05-16 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-04-01 |
Yi Steven |
See Remarks |
Informative Sell |
4,000 |
$9.15 |
$36.59K |
| 2026-03-31 |
Yi Steven |
See Remarks |
Informative Sell |
4,000 |
$9.60 |
$38.4K |
| 2026-03-30 |
Yi Steven |
See Remarks |
Informative Sell |
4,000 |
$9.23 |
$36.92K |
| 2026-03-27 |
Yeh Kuanling Amy |
Chief Technology Officer |
Informative Sell |
3,000 |
$9.44 |
$28.32K |
| 2026-03-25 |
Yi Steven |
See Remarks |
Informative Sell |
4,000 |
$9.42 |
$37.66K |
| 2026-03-24 |
Yi Steven |
See Remarks |
Informative Sell |
4,000 |
$9.48 |
$37.91K |
| 2026-03-23 |
Yi Steven |
See Remarks |
Informative Sell |
4,000 |
$9.67 |
$38.68K |
| 2026-03-18 |
Yi Steven |
See Remarks |
Informative Sell |
4,000 |
$9.59 |
$38.36K |
| 2026-03-15 |
Thompson Patrick Ryan |
See Remarks |
RSU Award |
84,750 |
- |
- |
| 2026-03-17 |
Nonko Eugene |
Director |
Informative Sell |
1,899 |
$10.00 |
$18.99K |
| 2026-03-16 |
Nonko Eugene |
Director |
Informative Sell |
2,444 |
$10.00 |
$24.45K |
| 2026-03-15 |
Nonko Eugene |
Director |
RSU Award |
174,450 |
- |
- |
| 2026-03-16 |
Cramer Keith |
Chief Revenue Officer |
Informative Sell |
10,000 |
$9.89 |
$98.95K |
| 2026-03-15 |
Cramer Keith |
Chief Revenue Officer |
RSU Award |
44,900 |
- |
- |
| 2026-03-15 |
Yeh Kuanling Amy |
Chief Technology Officer |
RSU Award |
62,300 |
- |
- |
| 2026-03-17 |
Yi Steven |
See Remarks |
Informative Sell |
5,227 |
$9.94 |
$51.96K |
| 2026-03-16 |
Yi Steven |
See Remarks |
Informative Sell |
4,000 |
$9.93 |
$39.73K |
| 2026-03-15 |
Yi Steven |
See Remarks |
RSU Award |
149,550 |
- |
- |
| 2026-03-15 |
Coyne Jeffrey B |
General Counsel and Secretary |
RSU Award |
57,350 |
- |
- |
| 2026-03-09 |
Nonko Eugene |
Director |
Informative Sell |
1,992 |
$10.00 |
$19.92K |
| 2026-03-11 |
Yi Steven |
See Remarks |
Informative Sell |
4,000 |
$9.68 |
$38.7K |
| 2026-03-10 |
Yi Steven |
See Remarks |
Informative Sell |
4,000 |
$9.75 |
$38.99K |
| 2026-03-09 |
Yi Steven |
See Remarks |
Informative Sell |
5,650 |
$9.86 |
$55.72K |
| 2026-03-06 |
Yeh Kuanling Amy |
Chief Technology Officer |
Informative Sell |
3,000 |
$10.34 |
$31.02K |
| 2026-03-04 |
Nonko Eugene |
Director |
Informative Sell |
5,400 |
$10.02 |
$54.09K |