SEC Form 4 Reporting Owner · CIK 0001577417

Karli S. Anderson

Director at Westwater Resources Inc · EVP at Summit Materials Inc

Bought (12 mo) —
Sold (12 mo) −$38K
Form 4 Filings 22
Companies 2
Filing Activity 2026-08-12 first filed 2021-04-01

Trading record

Open-market buys — 0 filings
Open-market sales −$38K 1 filing
Sales under a 10b5-1 plan 100% 1 of 1 sale filing

Companies

Open-market shares bought and sold at each company, and the holding after the latest filing
CompanyRoleFilingsBoughtSoldNetHolding after latest filing
WWRWestwater Resources Insider tradingDirector8—50,000−50,000790,909 2026-08-12
SUMSummit Materials Insider tradingEVP14———0 2025-02-10

Common-stock shares bought and sold on the open market, as reported on Form 4. The holding is what the latest filing at each company reported owning after its transactions.

Insider Trading History

Company Type Value Filed View filing
WWR Westwater Resources Inc Sell -$38,020 2026-08-12
WWR Westwater Resources Inc Award — 2026-05-28
WWR Westwater Resources Inc Exercise — 2025-10-15
WWR Westwater Resources Inc Award — 2025-05-30
SUM Summit Materials Inc - — 2025-02-10
SUM Summit Materials Inc Award — 2025-01-17
SUM Summit Materials Inc Exercise — 2024-12-26
WWR Westwater Resources Inc Award — 2024-06-03
SUM Summit Materials Inc Award — 2024-03-08
SUM Summit Materials Inc Exercise — 2024-03-04
WWR Westwater Resources Inc Award — 2023-05-12
SUM Summit Materials Inc Exercise — 2023-03-01
SUM Summit Materials Inc Award — 2023-02-24
SUM Summit Materials Inc Exercise — 2022-09-06
SUM Summit Materials Inc Exercise — 2022-08-01
WWR Westwater Resources Inc Award — 2022-05-11
SUM Summit Materials Inc Award — 2022-03-03
SUM Summit Materials Inc Exercise — 2022-03-01
SUM Summit Materials Inc Exercise — 2021-09-08
SUM Summit Materials Inc Exercise — 2021-08-03
WWR Westwater Resources Inc Award — 2021-05-25
SUM Summit Materials Inc Award — 2021-04-01