underwriter
US /ˈʌn.dɚˌraɪ.t̬ɚ/
UK /ˈʌn.dɚˌraɪ.t̬ɚ/

1.
a person or company that undertakes to guarantee the financial support or risk of a venture, especially in insurance or finance
:
•
The insurance underwriter assessed the risk of the new policy.
•
Investment banks often act as underwriters for initial public offerings.