Adaptimmune Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Marketable securities (Details)

v3.20.2

Marketable securities (Details) $ in Thousands	Jun. 30, 2020 USD ($) security	Dec. 31, 2019 USD ($) security
Marketable securities
Fair market value of investments in an unrealized loss position	$ 168,200	$ 2,000
Number of debt securities \| security	26	1
Number of available-for-sale securities in an unrealized loss position for more than one year \| security	0
Debt Securities
Marketable securities
Amortized cost	$ 296,478
Gross unrealized gains	619
Gross unrealized losses	(468)
Aggregate estimated fair value	296,629
Corporate Debt Securities Maturity Period Less Than Three Months \| Debt Securities
Marketable securities
Amortized cost	17,478
Gross unrealized gains	36
Aggregate estimated fair value	17,514
Corporate Debt Securities Maturity Period Three Months To One Year
Marketable securities
Amortized cost	118,989
Gross unrealized gains	548
Gross unrealized losses	(25)
Aggregate estimated fair value	119,512
Treasury Bills Maturity Period Less Than Three Months \| Debt Securities
Marketable securities
Amortized cost	1,999
Gross unrealized gains	1
Aggregate estimated fair value	2,000
Corporate Debt Securities Maturity Period One Year To Two Years \| Debt Securities
Marketable securities
Amortized cost	152,021
Gross unrealized gains	28
Gross unrealized losses	(443)
Aggregate estimated fair value	151,606
Agency Bond Maturity Period One Year To Two Years \| Debt Securities
Marketable securities
Amortized cost	5,991
Gross unrealized gains	6
Aggregate estimated fair value	$ 5,997

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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