Insider Profile · SEC Form 4 Activity · Trailing 90 Days

Heinrich Michael

Over the trailing 90 days, Heinrich Michael (Other at ZeroStack Corp.) bought $3.5M of stock in ZSTK, per 2 SEC Form 4 transactions.

Role: Other
Companies: ZSTK
Window: Trailing 90 days · 2 transactions · CIK 2093136
Net activity: +$3.5M ($3.5M bought · $0 sold)
Source: Official filings on sec.gov ↗

By Company (Trailing 90 Days)

Symbol	Company	Txns	Bought	Sold	Net
ZSTK	ZeroStack Corp.	2	$3.5M	—	$3.5M

Transactions (2)

Date	Symbol	Type	Shares	Value	Description
2026-07-20	ZSTK	Buy	4.6M	$3.5M	Open market or private purchase
2026-07-20	ZSTK	Buy	500.0K	$0	Grant, award or other acquisition

Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.

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