Clearfield, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Note 4 - Investments - Available-for-sale Investments (Details)

Note 4 - Investments - Available-for-sale Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Sep. 30, 2025
Fair value	$ 134,670	$ 144,306
Short-term US Treasury Securities [Member]
Amortized cost	80,607	84,192
Unrealized gains	19	119
Unrealized losses	(100)	(70)
Fair value	80,526	84,241
Short-term Certificates of Deposit [Member]
Amortized cost	248	248
Unrealized gains	0	0
Unrealized losses	0	(5)
Fair value	248	243
Short-term Investment [Member]
Amortized cost	80,855	84,440
Unrealized gains	19	119
Unrealized losses	(100)	(75)
Fair value	80,774	84,484
Long-term US Treasury Securities [Member]
Amortized cost	54,243	59,794
Unrealized gains	0	62
Unrealized losses	(347)	(34)
Fair value	53,896	59,822
Long-term Investment [Member]
Amortized cost	54,243	59,794
Unrealized gains	0	62
Unrealized losses	(347)	(34)
Fair value	$ 53,896	$ 59,822

- Definition

Amortized cost of 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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