| Summary of Available-for-Sale Debt Securities |
The following tables summarize the available-for-sale debt securities held at September 30, 2025 and December 31, 2024 (in thousands):
|
|
|
|
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|
|
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|
|
|
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|
|
|
|
Description |
|
Amortized
Cost |
|
|
Unrealized
Gains |
|
|
Unrealized
Losses |
|
|
Fair
Value |
|
September 30, 2025 |
|
|
|
|
|
|
|
|
|
|
|
|
US treasury securities |
|
$ |
188,647 |
|
|
$ |
479 |
|
|
$ |
(28 |
) |
|
$ |
189,098 |
|
US government agencies |
|
|
222,856 |
|
|
|
181 |
|
|
|
(145 |
) |
|
|
222,892 |
|
Commercial Paper |
|
|
10,683 |
|
|
|
1 |
|
|
|
— |
|
|
|
10,684 |
|
Corporate securities |
|
|
442,099 |
|
|
|
1,091 |
|
|
|
(77 |
) |
|
|
443,113 |
|
Total |
|
$ |
864,285 |
|
|
$ |
1,752 |
|
|
$ |
(250 |
) |
|
$ |
865,787 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Description |
|
Amortized
Cost |
|
|
Unrealized
Gains |
|
|
Unrealized
Losses |
|
|
Fair
Value |
|
December 31, 2024 |
|
|
|
|
|
|
|
|
|
|
|
|
US treasury securities |
|
$ |
158,518 |
|
|
$ |
190 |
|
|
$ |
(244 |
) |
|
$ |
158,464 |
|
US government agencies |
|
|
179,030 |
|
|
|
33 |
|
|
|
(1,248 |
) |
|
|
177,815 |
|
Commercial Paper |
|
|
15,847 |
|
|
|
5 |
|
|
|
— |
|
|
|
15,852 |
|
Corporate securities |
|
|
378,736 |
|
|
|
424 |
|
|
|
(644 |
) |
|
|
378,516 |
|
Total |
|
$ |
732,131 |
|
|
$ |
652 |
|
|
$ |
(2,136 |
) |
|
$ |
730,647 |
|
|