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Assets and Liabilities Measured at Fair Value (Tables)
9 Months Ended
Sep. 30, 2018
Summary of assets and liabilities subject to fair value measurements
A summary of the fair value of the Company’s recurring assets and liabilities aggregated by the level in the fair value hierarchy within which those measurements fall as of September 30, 2018 are identified in the following table:
 
(in thousands)
 
Level 2
 
Total
Assets:
 
 

 
 

Commercial paper
 
$
82,655

 
$
82,655

Asset-backed securities
 
52,101

 
52,101

Corporate debt securities
 
227,399

 
227,399

Money market funds
 
3,335

 
3,335

 
 
$
365,490

 
$
365,490

 
 
 
Level 2
 
Level 3
 
Total
Liabilities:
 
 

 
 

 
 

Contingent consideration payable
 
$

 
$
28,100

 
$
28,100

Deferred compensation plan liability
 
2,996

 

 
2,996

 
 
$
2,996

 
$
28,100

 
$
31,096

 
A summary of the fair value of the Company’s recurring assets and liabilities aggregated by the level in the fair value hierarchy within which those measurements fall as of December 31, 2017 are identified in the following table:
 
(in thousands)
Level 2
 
Total
Assets:
 

 
 

Commercial paper
$
79,803

 
$
79,803

Asset-backed securities
30,287

 
30,287

Corporate debt securities
199,012

 
199,012

Money market funds
2,598

 
2,598

 
$
311,700

 
$
311,700

 
 
Level 2
 
Level 3
 
Total
Liabilities:
 

 
 

 
 

Contingent consideration payable
$

 
$
25,400

 
$
25,400

Deferred compensation plan liability
2,258

 

 
2,258

 
$
2,258

 
$
25,400

 
$
27,658

Schedule of changes in contingent consideration payable
The following table shows the change in the balance of contingent consideration payable for the three and nine months ended September 30, 2018 and 2017, respectively:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
(in thousands)
 
2018
 
2017
 
2018
 
2017
Balance, beginning of the period
 
$
26,800

 
$
265,350

 
25,400

 
269,722

Payment of contingent consideration in cash
 

 

 

 
(10,000
)
Changes in fair value during the period, included in statement of operations
 
1,300

 
(244,250
)
 
2,700

 
(238,622
)
Balance, end of the period
 
$
28,100

 
$
21,100

 
28,100

 
$
21,100

Callidus Biopharma Inc  
Schedule of significant unobservable inputs used in the valuation of the contingent consideration payable
The following significant unobservable inputs were used in the valuation of the contingent consideration payable of Callidus for the ATB200 Pompe program:
 
Contingent Consideration
Liability
 
Fair Value as of
September 30, 2018
 
Valuation Technique
 
Unobservable Input
 
Range
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Discount rate
 
10.0%
 
 
 

 
 
 
 
 
 
Clinical and regulatory milestones
 
$
27.6
 million
 
Probability weighted discounted cash flow
 
Probability of achievement of milestones
 
71.0%-100.0%
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Projected year of payments
 
2018-2022