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Who

Michael John Brown

Director

Company insider

Files Form 4 as: Director, Lithium Americas; Director, ZeroStack.

In numbers

Trades disclosed
16
Buys
4
Sells
0
Bought
$13K
Sold
$0
Companies
2
Companies where not an officer
2
First trade
3 Apr 2025
Last trade
6 Jul 2026
Last filed
8 Jul 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
LAC Lithium AmericasDirector · Diversified & Base Metal Miners · last 6 Jul 20264 buys · 0 sells
ZSTK ZeroStackDirector · Health Care Distribution · last 22 Oct 20250 buys · 0 sells

Activity over time

1 Mar 2025 – 1 Oct 2026
01Mar 25Aug 25Jan 26May 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
6 Jul 2026filed 8 Jul 2026LAC Lithium Americasoption or derivative · Diversified & Base Metal MinersSEC FORM 4 Code A—12,312 at $0.00filing
6 Jul 2026filed 8 Jul 2026LAC Lithium Americasoption or derivative · Diversified & Base Metal MinersSEC FORM 4 Code A—12,312 at $0.00filing
13 Apr 2026filed 15 Apr 2026LAC Lithium Americasoption or derivative · Diversified & Base Metal MinersSEC FORM 4 Code A—12,038 at $0.00filing
13 Apr 2026filed 15 Apr 2026LAC Lithium Americasoption or derivative · Diversified & Base Metal MinersSEC FORM 4 Code A—12,038 at $0.00filing
20 Mar 2026filed 23 Mar 2026LAC Lithium AmericasDiversified & Base Metal MinersSEC FORM 4 Bought$3,7801,000 at $3.78filing
20 Mar 2026filed 23 Mar 2026LAC Lithium AmericasDiversified & Base Metal MinersSEC FORM 4 Bought$3,7801,000 at $3.78filing
15 Jan 2026filed 20 Jan 2026LAC Lithium Americasoption or derivative · Diversified & Base Metal MinersSEC FORM 4 Code A—10,447 at $0.00filing
15 Jan 2026filed 20 Jan 2026LAC Lithium Americasoption or derivative · Diversified & Base Metal MinersSEC FORM 4 Code A—10,447 at $0.00filing
22 Oct 2025filed 23 Oct 2025ZSTK ZeroStackoption or derivative · Health Care DistributionSEC FORM 4 Code A—7,468 at $0.00filing
22 Oct 2025filed 23 Oct 2025LAC Lithium Americasoption or derivative · Diversified & Base Metal MinersSEC FORM 4 Code A—7,468 at $0.00filing
5 Sep 2025filed 8 Sep 2025LAC Lithium AmericasDiversified & Base Metal MinersSEC FORM 4 Bought$2,8401,000 at $2.84filing
30 Jul 2025filed 30 Jul 2025LAC Lithium Americasoption or derivative · Diversified & Base Metal MinersSEC FORM 4 Code A—17,636 at $0.00filing
19 May 2025filed 20 May 2025LAC Lithium AmericasDiversified & Base Metal MinersSEC FORM 4 Bought$282100 at $2.82filing
30 Apr 2025filed 1 May 2025LAC Lithium Americasoption or derivative · Diversified & Base Metal MinersSEC FORM 4 Code A—16,950 at $0.00filing
10 Apr 2025filed 14 Apr 2025LAC Lithium Americasoption or derivative · Diversified & Base Metal MinersSEC FORM 4 Code A—12,580 at $0.00filing
3 Apr 2025filed 4 Apr 2025LAC Lithium AmericasDiversified & Base Metal MinersSEC FORM 4 Bought$2,7101,000 at $2.71filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Materials4

Buys in green, sells in red, by the company’s sector.

Related people

Rudy RongPresident · President at ZeroStack, filing Form 4 there in the last year
Dany VaimanCFO · CFO at ZeroStack, filing Form 4 there in the last year
Michael HeinrichExecutive Chairman · Executive Chairman at ZeroStack, filing Form 4 there in the last year
Daniel Reis-FariaCEO · CEO at ZeroStack, filing Form 4 there in the last year
Yuan GaoDirector · Director at Lithium Americas, filing Form 4 there in the last year