John D. Halpern - 13D/13G Filings

Real time Form 13D and 13G transaction reports:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
Time period
Reported
DateTime
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2026-05-15
8:50 pm
Sale
2026-02-1013GERNEXA THERAPEUTICS INC P
ERNA
John D. Halpern66,751
5.600%
-331,371decrease
(-83.23%)
Filing
History
2025-05-15
9:13 pm
Purchase
2025-03-3113GERNEXA THERAPEUTICS INC
ERNA
John D. Halpern15,925
9.600%
2,227increase
(+16.26%)
Filing
History
2025-02-14
8:36 pm
Purchase
2024-10-2913GERNEXA THERAPEUTICS INC
ERNA
John D. Halpern13,698
9.990%
12,229increase
(+832.47%)
Filing
History
2024-01-31
07:05 am
Purchase
2023-12-3113GBROOKLYN IMMUNO THERAPEUTICS L
ERNAW
John D. Halpern550,894
9.990%
98,611increase
(+21.80%)
Filing
History
2023-01-31
4:05 pm
Purchase
2023-01-3113GBROOKLYN IMMUNO THERAPEUTICS L
ERNAW
John D. Halpern452,283
8.800%
1,117increase
(+0.25%)
Filing
History
2022-12-05
5:20 pm
Sale
2022-12-0213GBROOKLYN IMMUNO THERAPEUTICS L
ERNAW
John D. Halpern451,166
8.800%
-4,296,079decrease
(-90.50%)
Filing
History