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ZSTK · Zerostack Corp.
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TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475
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ZSTK

ZeroStack Corp.
WHOLESALE & RETAIL · WHOLESALE-DRUGS, PROPRIETARIES & DRUGGISTS' SUNDRIES · CIK 0001790169
C-SUITE BUYING · 1☆ WATCH
INSIDER NET · 180D
$3.5M
open-market buys minus sells, Form 4 codes P and S
INSIDER BUYERS · 180D
1
CONGRESS BUYERS · 1Y
0
FUNDS ADDED · QTR
4
13F, latest reported quarter
REVENUE GROWTH
-0.5%
XBRL, annual
NET MARGIN
-335.6%
SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST
INSIDERS
net +$3.5M over 180 days
+$3.5M over 90 days
more than 95% of Wholesale & Retail
CONGRESS
no member of Congress has reported trading it
FUNDS
4 funds added or opened last quarter
below 94% of Wholesale & Retail
REVENUE
-0.5% year over year
below 64% of Wholesale & Retail
MARGIN
-335.6% net margin
below 97% of Wholesale & Retail
BUYBACKS
no share repurchases reported
SHORT
no short interest reported
The year, with the filings on it
Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail
TOTAL 12M RETURN -77.6%
-77.6%12M
-94%-47%+0%+48%2025-092025-102025-122026-032026-052026-072026-09 2026-07-20 · Heinrich Michael bought $3.5M2026-08-19 · Rong Rudy sold $7.6K
INSIDER BUYINSIDER SELL
INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY
Live price
Daily candles from TradingView, on their licence — no filings are marked on this one
WHY THIS NAME IS ON THE DESK
Insiders are net buyers of their own stock.
The record shows a net $3.5M bought by insiders over 180 days, 4 funds added last quarter. Every figure is a federal filing, dated the day it became public.
Same sector, ranked by filing activity
Sector from the SEC's own SIC classification
Insider transactions
Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, ZeroStack Corp. insiders bought a net $3.5M of stock across 2 Form 4 purchases and sales, with 1 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-04.

INSIDER
FILED
SHARES
VALUE
Rong Rudy
President
SELL
2026-08-19
1,000.0
$7.6K
Heinrich Michael
Executive Chairman
BUY
2026-07-20
4,608,575.0
$3.5M
2 TRANSACTIONS ON RECORD · THIN RECORD, READ IT AS SUCH

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Institutional holders
13F · holdings as of the latest quarter funds have reported
VANGUARD CAPITAL MANAGEMENT LLC
25,440.0 sh
$76.3K
GEODE CAPITAL MANAGEMENT, LLC
20,994.0 sh
$63.0K
VANGUARD FIDUCIARY TRUST CO
12,648.0 sh
$37.9K
Tower Research Capital LLC (TRC)
1,730.0 sh
$5.2K
UBS Group AG
440.0 sh
$1.3K
SCHEDULE 13D/G
No 5%+ ownership filings
Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.
FORM 144
No planned-sale notices
No insider has notified an intent to sell. This is the panel to watch after a run-up.
Fund concentration
N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show
VANGUARD EXTENDED MARKET INDEX FUND
$157.2K POSITION · AS OF 2026-03-31
0.0%
Fidelity Extended Market Index Fund
$51.1K POSITION · AS OF 2026-02-28
0.0%
Fidelity Nasdaq Composite Index Fund
$3.4K POSITION · AS OF 2026-02-28
0.0%
Fidelity Series Total Market Index Fund
$7.0K POSITION · AS OF 2026-02-28
0.0%
Fidelity Total Market Index Fund
$4.2K POSITION · AS OF 2026-02-28
0.0%
SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK
Fundamentals
Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all
2025-122024-122023-122022-12
REVENUE$35.7M$35.9M$76.1M$33.4M
GROSS PROFIT$1.6M$2.2M$17.7M$13.3M
OPERATING INCOME$-154.7M$-8.9M$-50.4M$-47.2M
NET INCOME$-119.7M$-15.9M$-57.0M$-52.4M
EPS (DILUTED)-43.49-50.02-7.75-13.68
OPERATING CASH FLOW$-8.7M$-5.0M$-8.4M$-15.9M
CASH$5.6M$5.2M$4.3M$8.9M
LONG-TERM DEBT$50.8M$0
BUYBACKS$0$255.0K
SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-04 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE
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Public filings, honestly analyzed. Official US government sources in one desk — every figure carries the date it was filed, and the methodology is published, backtest included.

SEC FORM 4FORM 13F 13D/GFORM 144XBRL STOCK ACTCONTRACTSFEC CFPBNRC
© 2026 WAVEMAN · SOURCE: SEC EDGAR & OFFICIAL GOVERNMENT DATA · NOT INVESTMENT ADVICE · CHART BY TRADINGVIEW · UPDATED 2026-09-04 ALL SYSTEMS LIVE FOR MACHINES →