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ZeroStack Corp.

ZSTK Clue Score42
United States Fiscal year ends December CIK 0001790169
$4.62 -0.43% Close, 9 Oct 2026

Price, with every insider trade on it

Closing prices, 12 months · point at a dot for who traded, or at the line for the close
4.62 on 9 Oct 2026
20 11 1 Oct 2025 Apr 2026 Oct 2026 13 Oct 2025 $18.11 14 Oct 2025 $19.41 15 Oct 2025 $19.95 16 Oct 2025 $19.01 17 Oct 2025 $18.00 20 Oct 2025 $18.56 21 Oct 2025 $17.20 22 Oct 2025 $15.28 23 Oct 2025 $13.87 24 Oct 2025 $13.30 27 Oct 2025 $11.67 28 Oct 2025 $11.63 29 Oct 2025 $10.35 30 Oct 2025 $9.24 31 Oct 2025 $9.53 3 Nov 2025 $8.82 4 Nov 2025 $9.38 5 Nov 2025 $9.50 6 Nov 2025 $8.06 7 Nov 2025 $8.01 10 Nov 2025 $8.10 11 Nov 2025 $8.52 12 Nov 2025 $8.41 13 Nov 2025 $7.84 14 Nov 2025 $7.84 17 Nov 2025 $7.45 18 Nov 2025 $7.46 19 Nov 2025 $7.65 20 Nov 2025 $6.88 21 Nov 2025 $7.10 24 Nov 2025 $7.88 25 Nov 2025 $7.79 26 Nov 2025 $8.00 28 Nov 2025 $8.26 1 Dec 2025 $8.25 2 Dec 2025 $8.39 3 Dec 2025 $9.90 4 Dec 2025 $10.45 5 Dec 2025 $10.15 8 Dec 2025 $9.20 9 Dec 2025 $9.37 10 Dec 2025 $9.51 11 Dec 2025 $9.66 12 Dec 2025 $9.74 15 Dec 2025 $8.54 16 Dec 2025 $8.84 17 Dec 2025 $8.01 18 Dec 2025 $7.63 19 Dec 2025 $7.31 22 Dec 2025 $7.56 23 Dec 2025 $7.26 24 Dec 2025 $7.36 26 Dec 2025 $7.28 29 Dec 2025 $6.90 30 Dec 2025 $6.33 31 Dec 2025 $6.26 2 Jan 2026 $6.85 5 Jan 2026 $7.41 6 Jan 2026 $7.09 7 Jan 2026 $7.07 8 Jan 2026 $7.06 9 Jan 2026 $7.29 12 Jan 2026 $7.16 13 Jan 2026 $6.23 14 Jan 2026 $6.30 15 Jan 2026 $6.54 16 Jan 2026 $6.57 20 Jan 2026 $6.70 21 Jan 2026 $6.77 22 Jan 2026 $6.82 23 Jan 2026 $6.70 26 Jan 2026 $6.32 27 Jan 2026 $10.97 28 Jan 2026 $8.95 29 Jan 2026 $11.80 30 Jan 2026 $11.48 2 Feb 2026 $7.79 3 Feb 2026 $8.44 4 Feb 2026 $8.20 5 Feb 2026 $8.37 6 Feb 2026 $9.31 9 Feb 2026 $10.18 10 Feb 2026 $10.28 11 Feb 2026 $9.10 12 Feb 2026 $8.64 13 Feb 2026 $9.71 17 Feb 2026 $9.04 18 Feb 2026 $8.50 19 Feb 2026 $8.59 20 Feb 2026 $8.31 23 Feb 2026 $8.13 24 Feb 2026 $8.82 25 Feb 2026 $9.03 26 Feb 2026 $8.03 27 Feb 2026 $8.10 2 Mar 2026 $7.22 3 Mar 2026 $6.52 4 Mar 2026 $6.99 5 Mar 2026 $7.22 6 Mar 2026 $6.69 9 Mar 2026 $7.08 10 Mar 2026 $7.00 11 Mar 2026 $6.96 12 Mar 2026 $7.01 13 Mar 2026 $8.38 16 Mar 2026 $8.90 17 Mar 2026 $8.73 18 Mar 2026 $8.50 19 Mar 2026 $8.21 20 Mar 2026 $9.64 23 Mar 2026 $8.59 24 Mar 2026 $8.25 25 Mar 2026 $8.15 26 Mar 2026 $6.51 27 Mar 2026 $6.28 30 Mar 2026 $6.21 31 Mar 2026 $6.18 1 Apr 2026 $5.98 2 Apr 2026 $5.62 6 Apr 2026 $4.96 7 Apr 2026 $4.83 8 Apr 2026 $4.93 9 Apr 2026 $4.92 10 Apr 2026 $5.18 13 Apr 2026 $5.60 14 Apr 2026 $5.90 15 Apr 2026 $6.10 16 Apr 2026 $6.91 17 Apr 2026 $7.51 20 Apr 2026 $7.42 21 Apr 2026 $6.98 22 Apr 2026 $7.49 23 Apr 2026 $7.41 24 Apr 2026 $6.68 27 Apr 2026 $7.08 28 Apr 2026 $6.33 29 Apr 2026 $6.20 30 Apr 2026 $5.96 1 May 2026 $5.19 4 May 2026 $4.97 5 May 2026 $5.10 6 May 2026 $5.20 7 May 2026 $5.56 8 May 2026 $5.50 11 May 2026 $4.65 12 May 2026 $5.35 13 May 2026 $4.44 14 May 2026 $4.05 15 May 2026 $4.18 18 May 2026 $4.05 19 May 2026 $4.06 20 May 2026 $4.20 21 May 2026 $4.29 22 May 2026 $4.28 26 May 2026 $4.46 27 May 2026 $4.44 28 May 2026 $4.56 29 May 2026 $4.64 1 Jun 2026 $4.77 2 Jun 2026 $4.84 3 Jun 2026 $4.90 4 Jun 2026 $5.12 5 Jun 2026 $4.82 8 Jun 2026 $4.76 9 Jun 2026 $4.75 10 Jun 2026 $4.65 11 Jun 2026 $4.89 12 Jun 2026 $4.56 15 Jun 2026 $4.92 16 Jun 2026 $4.64 17 Jun 2026 $4.06 18 Jun 2026 $4.04 22 Jun 2026 $4.04 23 Jun 2026 $4.04 24 Jun 2026 $3.56 25 Jun 2026 $3.55 26 Jun 2026 $3.43 29 Jun 2026 $3.46 30 Jun 2026 $3.00 1 Jul 2026 $3.11 2 Jul 2026 $3.35 6 Jul 2026 $3.15 7 Jul 2026 $3.22 8 Jul 2026 $2.86 9 Jul 2026 $2.49 10 Jul 2026 $2.24 13 Jul 2026 $2.18 14 Jul 2026 $1.82 15 Jul 2026 $1.92 16 Jul 2026 $1.87 17 Jul 2026 $1.70 20 Jul 2026 $1.65 21 Jul 2026 $1.65 22 Jul 2026 $1.63 23 Jul 2026 $1.54 24 Jul 2026 $1.45 27 Jul 2026 $1.42 28 Jul 2026 $1.35 29 Jul 2026 $1.49 30 Jul 2026 $1.54 31 Jul 2026 $1.52 3 Aug 2026 $1.73 4 Aug 2026 $1.94 5 Aug 2026 $1.86 6 Aug 2026 $1.76 7 Aug 2026 $1.65 10 Aug 2026 $1.50 11 Aug 2026 $1.69 12 Aug 2026 $1.83 13 Aug 2026 $1.67 14 Aug 2026 $1.94 17 Aug 2026 $1.95 18 Aug 2026 $1.84 19 Aug 2026 $4.96 20 Aug 2026 $5.89 21 Aug 2026 $4.71 24 Aug 2026 $5.06 25 Aug 2026 $6.47 26 Aug 2026 $5.75 27 Aug 2026 $5.88 28 Aug 2026 $5.41 31 Aug 2026 $5.28 1 Sep 2026 $5.09 2 Sep 2026 $5.08 3 Sep 2026 $4.82 4 Sep 2026 $4.30 8 Sep 2026 $4.30 9 Sep 2026 $4.24 10 Sep 2026 $4.90 11 Sep 2026 $4.84 14 Sep 2026 $4.85 15 Sep 2026 $4.72 16 Sep 2026 $4.15 17 Sep 2026 $4.50 18 Sep 2026 $4.71 21 Sep 2026 $4.32 22 Sep 2026 $4.05 23 Sep 2026 $3.92 24 Sep 2026 $3.99 25 Sep 2026 $4.07 28 Sep 2026 $4.24 29 Sep 2026 $4.84 30 Sep 2026 $4.81 1 Oct 2026 $4.84 2 Oct 2026 $4.86 5 Oct 2026 $4.82 6 Oct 2026 $4.75 7 Oct 2026 $4.77 8 Oct 2026 $4.64 9 Oct 2026 $4.62 Heinrich Michael Executive Chairman Bought $3.48M 20 Jul 2026 · at $0.75 Rong Rudy President Sold at will $7.57K 19 Aug 2026 · at $7.57 · 100% of stake
1 buy1 sale at will0 planned sales

Key numbers

Fiscal year 2025, ended 31 Dec 2025, as filed
Revenue
$35.68M
Free cash flow
$8.80M
Operating margin
-433.5%
Return on capital
-98.5%
Debt to equity
0.76
Revenue growth, 1 yr
-0.5%
Revenue growth, 5 yr
220.2% a year

Revenue and profit

Fiscal years, as filed with the SEC · point at a year for the detail
Full statements →
106K -14M FY20 Fiscal year 2020 Revenue $106.00K Net income $14.33M Margin -13,522.6% 9M -21M FY21 Fiscal year 2021 Revenue $8.98M Net income $21.36M Margin -237.9% · growth +8,371.7% 33M -52M FY22 Fiscal year 2022 Revenue $33.40M Net income $52.42M Margin -156.9% · growth +271.9% 76M -57M FY23 Fiscal year 2023 Revenue $76.07M Net income $57.04M Margin -75.0% · growth +127.8% 36M -16M FY24 Fiscal year 2024 Revenue $35.87M Net income $15.91M Margin -44.4% · growth -52.9% 36M 0K FY25 Fiscal year 2025 Revenue $35.68M Net income $0.00 Margin 0.0% · growth -0.5%
RevenueNet incomeLoss

Latest insider transactions

From Form 4, most recent first
All of them →
DateInsiderTypeValueOf own stake
19 Aug 2026 Rong Rudy
President
Sold at will $7.57K 100%
20 Jul 2026 Heinrich Michael
Executive Chairman
Bought $3.48M opened
13 Sep 2024 Starke Clifford
CEO
Bought $6.46K 13,324%
6 Sep 2024 Wolkin Harold
Director
Bought $24.26K opened
5 Sep 2024 Starke Clifford
CEO
Bought $48.45 0.0%
8 Apr 2024 Starke Clifford
CEO
Bought $1,000.00K 1,336%