The phrase "a working group formed" is correct and usable in written English.
It can be used when referring to the establishment of a group of individuals who come together to collaborate on a specific project or task.
Example: "After several meetings, a working group formed to address the issues raised in the community."
Alternatives: "a task force created" or "a committee established".
"We have to consider harsher punishments," said Shinsuke Amiya, a lawmaker in the governing Democratic Party of Japan and a member of a working group formed to look at strengthening insider trading regulations.
From the conference, a working group formed to continue exploring this clean energy opportunity.
A working group formed from a number of Dutch specialist societies, joined by the Dutch Orthopedic Association, has produced a guideline based on the available scientific evidence.
Moniz also described how the United States and China are co-chairing the technical working group formed under the Iran nuclear pact.
The 11 working groups formed at the charter school in November were meeting regularly.
Two working groups formed by the African Society of Human Genetics will first decide which diseases to study and where.
While there have been specialized working groups formed to perform essential tasks, they are limited in their scope and authority.
The Russian statement suggested that a working group be formed to identify areas of deeper cooperation in the oil and petrochemical industries, proposing a study for a Russian-Iranian joint venture oil company and a binational bank to finance such projects.
A working group was formed consisting of two researchers (IA and PW), a board member (MI) of the patient organization for OSA in The Netherlands (ApneuVereniging), and a pulmonologist specialized in OSA (BH), based at the Albert Schweitzer Hospital in Dordrecht, The Netherlands.
Hardly accidentally, a working group was formed in Russia in February to draft plans for a nationwide white list.
Within the International Life Sciences Institute Committee on Genomics, a working group was formed to focus on the application of microarray technology to preclinical assessments of drug-induced nephrotoxicity.
