In the last 12 months, insiders at ZeroStack Corp. ($ZSTK) filed 51 transactions with the SEC: 7 open-market purchases totaling $1,030,782 and 0 sales totaling $0. Net insider sentiment: net buying.
ZeroStack Corp. operates in the Wholesale-drugs, proprietaries & druggists' sundries industry (Trade & services sector).
Most Active Insiders
- Starke Clifford (CEO) — 11 transactions totaling $1,006,502
- Wolkin Harold (Not found) — 6 transactions totaling $24,255
- Cohen, Matthew S. (General Counsel) — 1 transaction totaling $21,635
- Reis-Faria Daniel (CEO) — 2 transactions totaling $25
- DORF SAMMY (Executive Chairman) — 1 transaction totaling $0
View all SEC Filings for ZeroStack Corp. (ZSTK).
Set Up your own filters →Recent Insider Transactions
| Transaction Date | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|
| March 31, 2026 | Heinrich Michael | Executive Chairman | J | Convertible Promissory Note | 4902220 | $0.00 | 0.0000 | 19,435,642 | 100.00% | 25.22% |
| Dec. 19, 2025 | Reis-Faria Daniel | CEO | A | Employee Stock Option (Right to Buy) | 471208 | $0.00 | 471,208.0000 | 19,435,642 | 9999.99% | 2.42% |
| Dec. 19, 2025 | Vaiman Dany | CFO | A | Employee Stock Option ("Right to Buy") | 235604 | $0.00 | 235,604.0000 | 19,435,642 | 9999.99% | 1.21% |
| Dec. 19, 2025 | Heinrich Michael | Executive Chairman | A | Director Stock Option (Right to Buy) | 471208 | $0.00 | 471,208.0000 | 19,435,642 | 9999.99% | 2.42% |
| Oct. 23, 2025 | Heinrich Michael | Executive Chairman | X | Convertible Promissory Note | 4902220 | $0.00 | 4,902,220.0000 | 19,435,642 | 9999.99% | 25.22% |
| Oct. 22, 2025 | BROWN MICHAEL JOHN | Not found | A | Deferred Share Units ("DSUs") | 7468 | $0.00 | 94,421.0000 | 19,435,642 | 8.59% | 0.04% |
| Oct. 9, 2025 | Reis-Faria Daniel | CEO | P | Pre-Funded Token Warrants | 5954743 | $25.19 | 5,954,743.0000 | 19,435,642 | 9999.99% | 30.64% |
| June 30, 2025 | Starke Clifford | CEO | A | Stock Appreciation Rights ("SARs") | 575319 | $0.00 | 575,319.0000 | 19,435,642 | 9999.99% | 2.96% |
| June 30, 2025 | Vaiman Dany | CFO | D | Stock Appreciation Rights ("SARs") | 342888 | $0.00 | 0.0000 | 19,435,642 | 100.00% | 1.76% |
| June 30, 2025 | Vaiman Dany | CFO | A | Stock Appreciation Rights ("SARs") | 342888 | $0.00 | 342,888.0000 | 19,435,642 | 9999.99% | 1.76% |
| June 30, 2025 | Vaiman Dany | CFO | D | Stock Appreciation Rights ("SARs") | 191773 | $0.00 | 0.0000 | 19,435,642 | 100.00% | 0.99% |
| June 30, 2025 | Vaiman Dany | CFO | A | Stock Appreciation Rights ("SARs") | 191773 | $0.00 | 191,773.0000 | 19,435,642 | 9999.99% | 0.99% |
| June 30, 2025 | Vaiman Dany | CFO | D | Stock Appreciation Rights ("SARs") | 372500 | $0.00 | 0.0000 | 19,435,642 | 100.00% | 1.92% |
| June 30, 2025 | Starke Clifford | CEO | D | Stock Appreciation Rights ("SARs") | 575319 | $0.00 | 0.0000 | 19,435,642 | 100.00% | 2.96% |
| June 30, 2025 | Wolkin Harold | Not found | A | Stock Appreciation Rights ("SARs") | 30000 | $0.00 | 30,000.0000 | 19,435,642 | 9999.99% | 0.15% |
| June 30, 2025 | LEVENTHAL MANFRED | Not found | D | Stock Appreciation Rights ("SARs") | 5000 | $0.00 | 0.0000 | 19,435,642 | 100.00% | 0.03% |
| June 30, 2025 | LEVENTHAL MANFRED | Not found | A | Stock Appreciation Rights ("SARs") | 5000 | $0.00 | 5,000.0000 | 19,435,642 | 9999.99% | 0.03% |
| June 30, 2025 | Starke Clifford | CEO | D | Stock Appreciation Rights ("SARs") | 1028665 | $0.00 | 0.0000 | 19,435,642 | 100.00% | 5.29% |
| June 30, 2025 | Starke Clifford | CEO | A | Stock Appreciation Rights ("SARs") | 1028665 | $0.00 | 1,028,665.0000 | 19,435,642 | 9999.99% | 5.29% |
| June 30, 2025 | Wolkin Harold | Not found | D | Stock Appreciation Rights ("SARs") | 30000 | $0.00 | 0.0000 | 19,435,642 | 100.00% | 0.15% |
| June 30, 2025 | Vaiman Dany | CFO | A | Stock Appreciation Rights ("SARs") | 372500 | $0.00 | 372,500.0000 | 19,435,642 | 9999.99% | 1.92% |
| Dec. 15, 2024 | DORF SAMMY | Executive Chairman | A | Common Shares | 250000 | $0.00 | 250,000.0000 | 0 | 9999.99% | 0.00% |
| Dec. 15, 2024 | WOO EDWARD | Not found | A | Common Shares | 50000 | $0.00 | 136,719.0000 | 0 | 57.66% | 0.00% |
| Dec. 15, 2024 | Wolkin Harold | Not found | A | Stock Appreciation Rights ("SARs") | 30000 | $0.00 | 30,000.0000 | 0 | 9999.99% | 0.00% |
| Dec. 15, 2024 | Vaiman Dany | CFO | A | Stock Appreciation Rights ("SARs") | 372500 | $0.00 | 372,500.0000 | 0 | 9999.99% | 0.00% |
| Dec. 15, 2024 | Starke Clifford | CEO | A | Common Shares | 900000 | $0.00 | 2,246,902.0000 | 0 | 66.82% | 0.00% |
| Dec. 15, 2024 | LEVENTHAL MANFRED | Not found | A | Stock Appreciation Rights ("SARs") | 5000 | $0.00 | 5,000.0000 | 0 | 9999.99% | 0.00% |
| Sept. 13, 2024 | Starke Clifford | CEO | P | Common Shares | 6795 | $0.95 | 1,346,902.0000 | 0 | 0.51% | 0.00% |
| Sept. 6, 2024 | Wolkin Harold | Not found | P | Common Shares | 5000 | $0.96 | 5,000.0000 | 0 | 9999.99% | 0.00% |
| Sept. 6, 2024 | Wolkin Harold | Not found | P | Common Shares | 5000 | $0.95 | 10,000.0000 | 0 | 100.00% | 0.00% |
| Sept. 6, 2024 | Wolkin Harold | Not found | P | Common Shares | 15000 | $0.98 | 25,000.0000 | 0 | 150.00% | 0.00% |
| Aug. 14, 2024 | Vaiman Dany | CFO | A | Stock Appreciation Rights ("SARs") | 191773 | $0.00 | 191,773.0000 | 0 | 9999.99% | 0.00% |
| Dec. 15, 2023 | Vaiman Dany | CFO | A | Stock Appreciation Rights ("SARs") | 342888 | $0.00 | 342,888.0000 | 0 | 9999.99% | 0.00% |
| Dec. 15, 2023 | Starke Clifford | CEO | A | Stock Appreciation Rights ("SARs") | 1028665 | $0.00 | 1,028,665.0000 | 0 | 9999.99% | 0.00% |
| Aug. 14, 2024 | Starke Clifford | CEO | A | Stock Appreciation Rights ("SARs") | 575319 | $0.00 | 575,319.0000 | 0 | 9999.99% | 0.00% |
| Sept. 5, 2024 | Starke Clifford | CEO | P | Common Shares | 51 | $0.95 | 1,340,107.0000 | 0 | 0.00% | 0.00% |
| April 8, 2024 | Starke Clifford | CEO | P | Common Shares | 526315 | $1.90 | 1,340,056.0000 | 0 | 64.68% | 0.00% |
| Nov. 15, 2023 | Starke Clifford | CEO | A | Common Shares | 327851 | $0.00 | 813,741.0000 | 0 | 67.47% | 0.00% |
| Nov. 15, 2023 | Taylor Kevin | Chairman | A | Common Shares | 124186 | $0.00 | 138,736.0000 | 0 | 853.51% | 0.00% |
| Nov. 15, 2023 | WOO EDWARD | Not found | A | Common Shares | 74512 | $0.00 | 86,719.0000 | 0 | 610.40% | 0.00% |
| Nov. 15, 2023 | SOLOMON THOMAS | Not found | A | Common Shares | 35766 | $0.00 | 35,766.0000 | 0 | 9999.99% | 0.00% |
| Nov. 15, 2023 | Vaiman Dany | CFO | A | Common Shares | 149024 | $0.00 | 170,850.0000 | 0 | 682.78% | 0.00% |
| June 25, 2023 | Rakine Hussein | Not found | D | Common Shares | 82100 | $0.00 | 348,750.0000 | 0 | 19.06% | 0.00% |
| May 18, 2023 | Cohen, Matthew S. | General Counsel | F | Common Shares | 90146 | $0.24 | 329,610.0000 | 0 | 21.48% | 0.00% |
| April 16, 2023 | Rakine Hussein | Chief Executive Officer | A | Common Shares | 1200000 | $0.00 | 8,617,019.0000 | 0 | 16.18% | 0.00% |
| March 17, 2023 | WOO EDWARD | Director | A | Options (Right to Buy) | 100000 | $0.00 | 100,000.0000 | 0 | 9999.99% | 0.00% |
| March 17, 2023 | Konigsberg Brandon | Director | A | Common Shares | 100000 | $0.00 | 100,000.0000 | 0 | 9999.99% | 0.00% |
| March 17, 2023 | Richardson Beverley | Director | A | Common Shares | 150000 | $0.00 | 150,000.0000 | 0 | 9999.99% | 0.00% |
| March 17, 2023 | LESLIE JOHN TIMOTHY | Director | A | Common Shares | 125000 | $0.00 | 138,574.0000 | 0 | 920.88% | 0.00% |
| March 17, 2023 | MASTRONARDI MARC | Director | A | Common Shares | 150000 | $0.00 | 160,000.0000 | 0 | 1500.00% | 0.00% |
| March 17, 2023 | ROA JUAN CARLOS GOMEZ | Director | A | Common Shares | 150000 | $0.00 | 2,042,509.0000 | 0 | 7.93% | 0.00% |