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ZSTK · NASDAQ · Asset Management

ZeroStack (ZSTK)

Stakes 0G tokens and distributes pharmaceuticals through its German Phatebo business.

$4.08
vs last close−0.24 (−5.56%)

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13F · 13D/G · Form 4

Institutions5.86%61.3K shares
11 holders · as of Jun 30, 2026
Insiders1,013.04%10.60M shares
5 holders · as of Jul 20, 2026
Adds to1,018.90%

1.05M company shares as of Aug 21, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

These groups come from separate filings that can overlap, so they add to 1,018.90%; nothing is left for Other.

13F · 13D/G · Form 4

HolderStakeSharesDate
Daniel Reis-FariaInsiderdirector, officer: CEO
569.29%5.95Mfiled Jul 20, 2026
Michael HeinrichInsiderdirector, officer: Executive Chairman
440.59%4.61Mfiled Jul 20, 2026
Vanguard Capital Management LLCInstitution
2.43%25,440as of Jun 30, 2026
Clifford StarkeInsiderdirector, officer: CEO
2.22%23,252filed Dec 17, 2024
Geode Capital Management, LLCInstitution
2.01%20,994as of Jun 30, 2026
Vanguard Fiduciary Trust CoInstitution
1.21%12,648as of Jun 30, 2026
Sammy DorfInsiderdirector, officer: Executive Chairman
0.61%6,410filed Dec 17, 2024
Edward WooInsiderdirector
0.33%3,454filed Dec 17, 2024
Tower Research Capital LLC (TRC)Institution
0.17%1,730as of Jun 30, 2026
UBS Group AGInstitution
0.04%440as of Jun 30, 2026
Mercer Global Advisors Inc /AdvInstitution
0.00%25as of Jun 30, 2026
Advisor Group Holdings, Inc.Institution
0.00%12as of Jun 30, 2026
Morgan StanleyInstitution
0.00%7as of Jun 30, 2026
Barclays PLCInstitution
0.00%3as of Jun 30, 2026
Citigroup IncInstitution
0.00%1as of Jun 30, 2026
Key Financial IncInstitution
0.00%1as of Jun 30, 2026
Blockcat Pte. Ltd.Strategic
—8.30% of class, as filed—filed Sep 4, 2026
Puple AI Inc.Strategic
—8.30% of class, as filed—filed Sep 2, 2026
Rudy RongInsiderofficer: President
0.00%0filed Aug 21, 2026
Dany Vaiman1,2Insiderofficer: CFO
0.42%4,381filed Nov 15, 2023
Kevin Taylor1Insiderdirector, officer: Chairman
0.30%3,184filed Nov 15, 2023
Juan Carlos Gomez Roa3Insiderdirector
0.25%2,619filed Mar 21, 2023
Luis Merchan4Insiderdirector: CEO & Chairman of the Board
0.24%2,532filed Jan 3, 2023
Thomas Solomon1Insiderdirector
0.09%917filed Nov 15, 2023
Harold Wolkin5Insiderdirector
0.06%641filed Sep 11, 2024
  1. Last filed Nov 15, 2023; leaving the company requires no filing. Not in the bar.
  2. Reported at 2.90% on Jul 21, 2026, under the 5% line, so no further filing is required.
  3. Last filed Mar 21, 2023; leaving the company requires no filing. Not in the bar.
  4. Last filed Jan 3, 2023; leaving the company requires no filing. Not in the bar.
  5. Last filed Sep 11, 2024; leaving the company requires no filing. Not in the bar.

13F, as of Jun 30, 2026

11 holders · 61.3K shares · 4 new positions · 4 increased · 3 reduced · 2 closed

HolderShares% outstandingChg q/qFiled
Vanguard Capital Management LLC25.4K2.43%0Aug 13, 2026
Geode Capital Management, LLC21.0K2.01%−4.3KAug 12, 2026
Vanguard Fiduciary Trust Co12.6K1.21%0Aug 13, 2026
Tower Research Capital LLC (TRC)1.7K0.17%+1.7KnewAug 11, 2026
UBS Group AG4400.04%−226Aug 13, 2026
Mercer Global Advisors Inc /Adv250.00%+25newAug 11, 2026
Advisor Group Holdings, Inc.120.00%0Aug 14, 2026
Morgan Stanley70.00%−166Aug 13, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Reis-Faria Daniel88.30%6.43M13DDec 23, 2025
Heinrich Michaelincl. Zero Gravity Labs Inc.86.40%5.37M13DDec 23, 2025
Vaiman Dany23.80%263.2K13DDec 23, 2025
Starke Clifford17.10%13DJul 21, 2025
Blockcat Pte. Ltd.8.30%13GSep 4, 2026
Puple AI Inc.8.30%13GSep 2, 2026

Form 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Aug 19, 2026
Rudy Rongofficer: President
Sale1,000$7.570
Jul 20, 2026
Michael Heinrichdirector, officer: Executive Chairman
Purchase4,608,575$0.75494,608,575
Oct 9, 2025
Daniel Reis-Fariadirector, officer: CEO
Purchase5,954,743$0.00015,954,743

House and Senate disclosures

Not reported.