LEVENTHAL MANFRED 4

What Happened

• Manfred Leventhal, a director of ZeroStack Corp. (ZSTK), was granted 35,000 derivative securities (an award) on May 5, 2026. The reported acquisition price is $0.00, so there was no cash outlay at grant. The filing lists the award as a derivative instrument (options/awards) rather than an open-market purchase or sale, i.e., this appears to be compensation rather than a market trade.

Key Details

• Transaction date: 2026-05-05; Form 4 filed: 2026-05-07 (filed within the usual 2-business-day window).
• Amount granted: 35,000 derivative shares/options; reported price: $0.00.
• Vesting (per footnote F1): 1/3 vested on May 5, 2026; 1/3 on August 30, 2026; 1/3 on December 31, 2026.
• Shares owned after the transaction: not specified in the provided summary of the filing.
• Footnote: F1 specifies the vesting schedule above. No 10b5-1 plan, tax withholding, or late-filing flag was reported in the provided data.

Context

• This transaction is a compensation award (derivative grant) rather than a purchase or sale; such grants are common for directors and typically reflect pay/retention arrangements rather than immediate market views. Because the grant vests over time, Leventhal will only fully realize the economic interest as portions vest; depending on the specific instrument, he may need to exercise options or receive shares upon vesting.