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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers are those entities, including individual and legal persons, have significant controls over the company in focus. The offspring entities and appointments are those entities that the company in focus can influence on.

Clicking the links on parent entities or officers, and offspring entities or managed companies will put them in focus and show upstream or downstream connections. In general, ascendant entities can be found by moving toward upstream, and descendant entities are by toward downstream. In this way, progenitor entities such as grandparent companies (parents of parent), sibling companies (children of parent), partner companies (parents of child), and progeny entities such as grandchild companies (children of child) can be found easily.

Parent entities and officers 10
  • 1
    Martinez, Geronimo
    Director born in October 1985
    Individual (10 offsprings)
    Officer
    2023-06-15 ~ 2025-07-14
    OF - Director → CIF 0
  • 2
    Karp, Daniel Jeremy
    Finance Director born in December 1977
    Individual (1 offspring)
    Officer
    2019-04-02 ~ 2019-06-07
    OF - Director → CIF 0
  • 3
    Mochan, Lori Elizabeth
    Director born in August 1977
    Individual (17 offsprings)
    Officer
    2020-04-21 ~ 2023-06-15
    OF - Director → CIF 0
  • 4
    Green, Steven John
    Finance Director born in April 1977
    Individual (12 offsprings)
    Officer
    2019-04-02 ~ 2020-04-24
    OF - Director → CIF 0
  • 5
    Purwaha, Amit Singh
    Born in April 1982
    Individual (10 offsprings)
    Officer
    2025-07-14 ~ now
    OF - Director → CIF 0
  • 6
    Mill, Trevor Anthony
    Senior V P Global Daftey And Regulatory Sciences born in April 1971
    Individual (10 offsprings)
    Officer
    2019-04-02 ~ 2020-01-31
    OF - Director → CIF 0
  • 7
    Dambach, Mike
    Company Treasurer born in August 1966
    Individual (1 offspring)
    Officer
    2019-02-28 ~ 2019-04-02
    OF - Director → CIF 0
  • 8
    Hanby, Helen Elizabeth
    Born in June 1966
    Individual (7 offsprings)
    Officer
    2019-06-04 ~ now
    OF - Director → CIF 0
    Hanby, Helen Elizabeth
    Individual (7 offsprings)
    Officer
    2019-08-08 ~ now
    OF - Secretary → CIF 0
  • 9
    Kramer, Robin
    Chief Accounting Officer born in May 1965
    Individual (1 offspring)
    Officer
    2019-02-28 ~ 2019-04-02
    OF - Director → CIF 0
  • 10
    225 Binney Street, Cambridge, United States
    Corporate (6 offsprings)
    Person with significant control
    2019-02-28 ~ now
    PE - Ownership of voting rights - 75% or moreCIF 0
    PE - Ownership of shares – 75% or moreCIF 0
    PE - Right to appoint or remove directorsCIF 0
parent relation
Company in focus

TUNGSTEN BIDCO LIMITED

Period: 2019-02-28 ~ now
Company number: 11852085
Registered name
TUNGSTEN BIDCO LIMITED - now
Standard Industrial Classification
64209 - Activities Of Other Holding Companies N.e.c.

Related profiles found in government register
  • TUNGSTEN BIDCO LIMITED
    Info
    Registered number 11852085
    Building 5 Foundation Park, Roxborough Way, Maidenhead, Berkshire SL6 3UD
    PRIVATE LIMITED COMPANY incorporated on 2019-02-28 (7 years). The company status is Active.
    The last date of confirmation statement was made at 2025-02-27
    CIF 0
  • TUNGSTEN BIDCO LIMITED
    S
    Registered number missing
    Building 5 Foundation Park, Roxborough Way, Maidenhead, Berkshire, England, SL6 3UD
    Private Limited Company
    CIF 1
child relation
Offspring entities and appointments 1
  • 1
    NIGHTSTAR THERAPEUTICS LIMITED
    - now 10852952
    NIGHTSTAR THERAPEUTICS PLC
    - 2019-06-11 10852952
    NIGHTSTAR THERAPEUTICS LIMITED - 2017-09-15
    Building 5 Foundation Park, Roxborough Way, Maidenhead, Berkshire, England
    Active Corporate (18 parents, 1 offspring)
    Person with significant control
    2019-06-07 ~ now
    CIF 1 - Ownership of voting rights - 75% or more OE
    CIF 1 - Right to appoint or remove directors OE
    CIF 1 - Ownership of shares – 75% or more OE

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Contains public sector information retrieved at 9 February 2026 and licensed under the Open Government Licence v3.0.