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SMTK · NASDAQ · Semiconductors

SmartKem (SMTK)

Develops organic semiconductor inks for flexible displays, sensors, and chip packaging.

$1.73
After hours+0.03 (+1.89%)
At close$1.70(−5.03%)

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13F · 13D/G · Form 4

Institutions5.29%29.9K shares
12 holders · as of Jun 30, 2026
Insiders1.48%8.4K shares
1 holder · as of Sep 25, 2025
Other93.23%527.0K shares
remainder

565.3K company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

Two share counts disagree (565.3K in the company's Sep 22, 2026 report, 517.3K elsewhere); stakes use the report.

13F · 13D/G · Form 4

HolderStakeSharesDate
Jane Street Group, LLCInstitution
1.85%524,023as of Jun 30, 2026
Joseph Christopher LizzioInsider10 percent owner
1.48%8,380filed Sep 25, 2025
Peak6 LLCInstitution
1.20%339,051as of Jun 30, 2026
Rossby Financial, LCCInstitution
1.05%296,000as of Jun 30, 2026
Citadel Advisors LLCInstitution
0.61%173,063as of Jun 30, 2026
Virtu Financial LLCInstitution
0.31%86,867as of Jun 30, 2026
Geode Capital Management, LLCInstitution
0.15%43,678as of Jun 30, 2026
PFG Investments, LLCInstitution
0.06%16,000as of Jun 30, 2026
XTX Topco LtdInstitution
0.05%14,497as of Jun 30, 2026
Rockefeller Capital Management L.P.Institution
0.00%1,000as of Jun 30, 2026
SRS Capital Advisors, Inc.Institution
0.00%145as of Jun 30, 2026
Mercer Global Advisors Inc /AdvInstitution
0.00%100as of Jun 30, 2026
UBS Group AGInstitution
0.00%84as of Jun 30, 2026
Entrepreneurs Fund General Partner LimitedStrategic
—14.10% of class, as filed—filed Mar 5, 2021
Five Narrow Lane LPStrategic
—9.99% of class, as filed—filed Feb 1, 2024
Orin HirschmanInsider
—9.90% of class, as filed—filed Jan 30, 2026
Simon P. King1Insiderdirector
0.76%4,272filed Jan 27, 2022
Octopus Investments Ltd.2,3Strategic10 percent owner
0.65%3,674filed Mar 5, 2021
Entrepreneurs Fund LP2Strategic10 percent owner
0.36%2,049filed Mar 5, 2021
Mark N. Tompkins4Insiderother: Former Director and 10% Owner
0.23%1,314filed Feb 25, 2021
Klaas de Boer5Insiderdirector
0.04%229filed Jun 5, 2024
Ian Jenks6Insiderdirector, officer: Chairman and CEO
0.04%210filed Feb 13, 2024
Simon Ogier7Insiderofficer: Chief Technology Officer
0.02%115filed Feb 2, 2024
Ian Seth Jacobs4Insiderother: Former Officer and Director
0.02%114filed Feb 25, 2021
Robert Bahns8Insiderdirector, officer: Chief Financial Officer
0.01%68filed Feb 24, 2021
  1. Last filed Jan 27, 2022; leaving the company requires no filing. Not in the bar.
  2. Last filed Mar 5, 2021; leaving the company requires no filing. Not in the bar.
  3. Reported at 4.80% on May 12, 2025, under the 5% line, so no further filing is required.
  4. Last filed Feb 25, 2021; leaving the company requires no filing. Not in the bar.
  5. Last filed Jun 5, 2024; leaving the company requires no filing. Not in the bar.
  6. Last filed Feb 13, 2024; leaving the company requires no filing. Not in the bar.
  7. Last filed Feb 2, 2024; leaving the company requires no filing. Not in the bar.
  8. Last filed Feb 24, 2021; leaving the company requires no filing. Not in the bar.

13F, as of Jun 30, 2026

12 holders · 1.49M shares · 7 new positions · 10 increased · 2 reduced · 5 closed

HolderShares% outstandingChg q/qFiled
Jane Street Group, LLC524.0K92.70%+524.0KnewAug 14, 2026
Peak6 LLC339.1K59.98%+339.1KnewAug 13, 2026
Rossby Financial, LCC296.0K52.36%+60.0KAug 4, 2026
Citadel Advisors LLC173.1K30.62%+150.7KSep 2, 2026
Virtu Financial LLC86.9K15.37%+60.0KAug 13, 2026
Geode Capital Management, LLC43.7K7.73%+43.7KnewAug 12, 2026
PFG Investments, LLC16.0K2.83%−10.5KJul 23, 2026
XTX Topco Ltd14.5K2.56%−9.3KAug 14, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Orin Hirschman9.90%13GJan 30, 2026
Lizzio Joseph Christopher7.65%13GSep 24, 2025
Octopus Investments Limitedincl. Octopus Titan VCT Plc6.00%13DJan 21, 2025

Form 4

Latest trades

No open-market trades in the last 12 months.

House and Senate disclosures

Not reported.