Flora Growth Corp. (ZSTK) IPO — S-1 Filing, Stock & Insider Activity

Flora Growth Corp. IPO — Status & S-1 Filing

Ticker: ZSTK
Status: Registered — S-1 filed with the SEC
S-1 filed: 2025-11-28
Exchange: NASDAQ
Expected price range: not yet disclosed (set in a later S-1/A or pricing amendment)
SEC CIK: 0001790169 · View the S-1 on SEC EDGAR →

Track every registration update on the InsiderAlpha IPO tracker.

Updated Jul 16, 2026 · Last SEC filing 2026-05-07

Flora Growth Corp. (ZSTK) has filed 3 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-07. 1 Form 8-K material event filings were reported by ZSTK in the last 90 days. InsiderAlpha tracks every ZSTK SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Flora Growth Corp. (ZSTK)

SIC classification	Wholesale-Drugs, Proprietaries & Druggists' Sundries (SIC 5122)
SEC CIK	0001790169

90-Day SEC Filing Activity

Form 4 filings (90d)	3
Form 8-K filings (90d)	1
Latest Form 4 filing	2026-05-07

Recent ZSTK Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2024-12-15	Starke Clifford	CEO	A — Grant or award	900.0K	—	—	SEC
2024-12-15	WOO EDWARD	Insider	A — Grant or award	50.0K	—	—	SEC
2024-12-15	DORF SAMMY	Executive Chairman	A — Grant or award	250.0K	—	—	SEC

All transactions sourced from SEC EDGAR Form 4 filings for Flora Growth Corp. (ZSTK). Updated in real time as new filings are submitted to the SEC.

Most-Active ZSTK Insiders — Last 90 Days

Insider	Form 4 filings	Total transaction value
LEVENTHAL MANFRED	1	—
WOO EDWARD	1	—
Zeifman Laurence	1	—

Recent ZSTK Form 8-K Material Events

2026-05-06 — Item 5.02, 9.01 [SEC]
2026-03-31 — Item 1.01, 1.02, 3.02, 9.01 · Acquisition · mixed [SEC]
ZeroStack Corp. (formerly Flora Growth Corp.) completed a transformative reverse merger transaction on March 31, 2026, whereby Texas Blocker Corp. (formed by ZeroStack's CEO and CFO) received 142.2 million Zero Gravity blockchain tokens valued at approximately $107.4 million in e

Recent Insider Filings

2026-05-07 — Zeifman Laurence (Insider)
2026-05-07 — WOO EDWARD (Insider)
2026-05-07 — LEVENTHAL MANFRED (Insider)
2026-04-03 — Heinrich Michael (Executive Chairman)
2025-12-22 — Vaiman Dany (CFO)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in ZSTK insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

ZSTK Insider Trading — FAQ

What is the latest insider trade for ZSTK?: Flora Growth Corp. (ZSTK) had 3 insider filings in the last 90 days, with the most recent on 2026-05-07. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying ZSTK stock?: 0 insider purchases of ZSTK were filed in the last 90 days.
How many insiders are selling ZSTK stock?: 0 insider sales of ZSTK were filed in the last 90 days.
Where can I see ZSTK SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every ZSTK SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

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