Canada Software & IT Services

Zerostack Corp (ZSTK)

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Zerostack Corp experienced minimal insider trading activity recently, highlighted by President Rong Rudy selling 1,000 shares for $7,570 in August 2026. This follows significant prior buying by Executive Chairman Michael Heinrich. The stock price has risen 50.9% over the last quarter, despite a notable miss in the latest earnings report.
Ticker: ZSTK Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
No insider activity signals detected

Insider trades have not triggered unusual activity signals for this company.

Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Rong Rudy President Officer
Transaction date
Sale
Price
138.64
Quantity 70,136 +11.6%
Value US$4,643,578
Heinrich, Michael Director of Issuer, Senior Officer of Issuer Executive Director
Transaction date
Purchase
Price
443.71
Quantity 35,713
Value US$2,589,001
Heinrich Michael Executive Chairman Executive Director
Transaction date
Purchase
Price
197.92
Quantity 76,312 -5.3%
Value US$4,994,092
Heinrich, Michael Director of Issuer, Senior Officer of Issuer Executive Director
Transaction date
Purchase
Price
33.34
Quantity 4,902,220
Value US$163,440,015
2.7
Starke, Clifford Director of Issuer, Senior Officer of Issuer Executive Director
Transaction date
Purchase
Price
0.95
Quantity 6,795 +13323.5%
Value CA$6,455
3.1
Starke Clifford CEO Executive Director
Transaction date
Purchase
Price
0.95
Quantity 6,795 +13323.5%
Value US$6,455
3.7
Wolkin, Harold Morton Director of Issuer Non-Executive Director
Transaction date
Purchase
Price
0.97
Quantity 5,000 +25.0%
Value US$4,850
3.2
Wolkin Harold Non-Executive Director
Transaction date
Purchase
Price
0.98
Quantity 15,000 +150.0%
Value US$14,685
3.2
Wolkin Harold Non-Executive Director
Transaction date
Purchase
Price
0.95
Quantity 5,000 +100.0%
Value US$4,760
3.2
Wolkin Harold Non-Executive Director
Transaction date
Purchase
Price
0.96
Quantity 5,000 +inf%
Value US$4,810
3.1
Starke Clifford CEO Executive Director
Transaction date
Purchase
Price
0.95
Quantity 51 +0.0%
Value US$48
3.1
Starke Clifford CEO Executive Director
Transaction date
Purchase
Price
1.90
Quantity 526,315 +1335.9%
Value US$999,998
MERCHAN LUIS Affiliate
Transaction date
Proposed sale
Price
0.26
Quantity 500,000
Value US$130,000
ROA JUAN CARLOS GOMEZ Director Non-Executive Director
Transaction date
Proposed sale
Price
0.42
Quantity 500,000
Value US$208,500
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-08-21 2026-08-19 S Sale
Rong Rudy

President

Officer
70,136 +11.6%
138.64
US$4,643,578 		70,136 +11.6% 138.64 US$4,643,578
2026-07-20 2026-07-20 B Purchase
Heinrich, Michael

Director of Issuer, Senior Officer of Issuer

Executive Director
35,713
443.71
US$2,589,001 		35,713 443.71 US$2,589,001
2026-07-20 2026-07-20 B Purchase
Heinrich Michael

Executive Chairman

Executive Director
76,312 -5.3%
197.92
US$4,994,092 		76,312 -5.3% 197.92 US$4,994,092
2025-10-27 2025-10-23 B Purchase
Heinrich, Michael

Director of Issuer, Senior Officer of Issuer

Executive Director
4,902,220
33.34
US$163,440,015 		4,902,220 33.34 US$163,440,015
2024-09-18 2024-09-13 B Purchase
2.7
Starke, Clifford

Director of Issuer, Senior Officer of Issuer

Executive Director
6,795 +13323.5%
0.95
CA$6,455 		6,795 +13323.5% 0.95 CA$6,455
2024-09-17 2024-09-13 B Purchase
3.1
Starke Clifford

CEO

Executive Director
6,795 +13323.5%
0.95
US$6,455 		6,795 +13323.5% 0.95 US$6,455
2024-09-11 2024-09-06 B Purchase
3.7
Wolkin, Harold Morton

Director of Issuer

Non-Executive Director
5,000 +25.0%
0.97
US$4,850 		5,000 +25.0% 0.97 US$4,850
2024-09-11 2024-09-06 B Purchase
3.2
Wolkin Harold
Non-Executive Director
15,000 +150.0%
0.98
US$14,685 		15,000 +150.0% 0.98 US$14,685
2024-09-11 2024-09-06 B Purchase
3.2
Wolkin Harold
Non-Executive Director
5,000 +100.0%
0.95
US$4,760 		5,000 +100.0% 0.95 US$4,760
2024-09-11 2024-09-06 B Purchase
3.2
Wolkin Harold
Non-Executive Director
5,000 +inf%
0.96
US$4,810 		5,000 +inf% 0.96 US$4,810
2024-09-06 2024-09-05 B Purchase
3.1
Starke Clifford

CEO

Executive Director
51 +0.0%
0.95
US$48 		51 +0.0% 0.95 US$48
2024-04-09 2024-04-08 B Purchase
3.1
Starke Clifford

CEO

Executive Director
526,315 +1335.9%
1.90
US$999,998 		526,315 +1335.9% 1.90 US$999,998
2023-05-22 2023-05-22 PrS Proposed sale
MERCHAN LUIS

Affiliate
500,000
0.26
US$130,000 		500,000 0.26 US$130,000
2022-12-01 2022-12-01 PrS Proposed sale
ROA JUAN CARLOS GOMEZ

Director

Non-Executive Director
500,000
0.42
US$208,500 		500,000 0.42 US$208,500
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