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ZeroStack Corp.

ZSTK Net buying
CIK 0001790169 #4334 in the set updated 17 Sep 2026
Bought (120 mo)
$4.51M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$7.57K
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$7.57K
1 of 1 sales
Net
+$4.50M
+$4.50M against sales at will

By person

17 insiders · 9 transactions

There is no salary here to measure against. ZeroStack Corp.'s chief executive is paid a token, so dividing a holding by it says nothing.

Which is why this company is in neither direction of the chief executive filter on the transactions page. A stake that cannot be expressed as a multiple is not the same thing as a small one.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Heinrich Michael
Executive Chairman
$3.48M (1)
+$3.48M
4,608,575
$34.89M
Starke Clifford
CEO
$1.01M (3)
+$1.01M
1,472,560
$11.15M
Wolkin Harold
Director
$24.26K (3)
+$24.26K
25,000
$189.25K
Rong Rudy
President
$7.57K (1)
−$7.57K
0
$0.00
−100.0%
Reis-Faria Daniel
CEO
5,954,743
$45.08M
ROA JUAN CARLOS GOMEZ
Director
2,042,509
$15.46M
+7.9%
Cohen, Matthew S.
General Counsel
329,610
$2.50M
−21.5%
DORF SAMMY
Executive Chairman
250,000
$1.89M
Vaiman Dany
CFO
170,850
$1.29M
+682.8%
MASTRONARDI MARC
Director
160,000
$1.21M
+1,500%
Richardson Beverley
Director
150,000
$1.14M
LESLIE JOHN TIMOTHY
Director
138,574
$1.05M
+920.9%
WOO EDWARD
Director
134,698
$1.02M
+1,222%
Taylor Kevin
Chairman
124,186
$940.09K
Konigsberg Brandon
Director
100,000
$757.00K
SOLOMON THOMAS
Director
35,766
$270.75K
Rakine Hussein
Director
2,500
$18.93K

No percentages here. This company's share count has moved by a factor of 30.4 over the window, from 741,261 to 22,568,653 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Nothing of that kind in this period.

What was left out

Form 4 filings counted 43
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 1
Transactions with no price 0
Shares from compensation/vesting 9,913,328
History held since 21 Mar 2023