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Parkman Healthcare Partners LLC

Position in CSTL — Castle Biosciences Inc

CIK 1777015 STAMFORD, CT

Position in CSTL

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$3,453,265
+$356,283 QoQ
Shares Held
144,791
+14.8% QoQ
Ownership
0.474%
of shares outstanding
% of Portfolio
0.36%
of 13F equity value
Holder Rank
#41
of 176 holders
Holding Since
Jun 2020
16 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in CSTL Over Time

Shares Held

Position Value (USD)

Position in Diagnostics & Research

Healthcare · as of Jun 30, 2026

Parkman Healthcare Partners LLC holds $40,995,408 across 5 Diagnostics & Research names. CSTL ranks #4 (8.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 CSTL
Castle Biosciences Inc
This page
144,791 $3,453,265

All Filings in CSTL

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16 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $3,453,265 144,791
2026-03-31 $3,096,982 126,150
2025-12-31 $5,856,706 150,558
2025-09-30 $10,828,683 475,568
2025-06-30 $7,193,190 352,262
2025-03-31 $7,018,031 350,551
2024-12-31 $8,118,362 304,629
2024-09-30 $8,443,944 296,071
2024-06-30 $6,049,774 277,895
2024-03-31 $8,138,087 367,408
2023-12-31 $7,707,426 357,156
2023-09-30 $3,793,358 224,592
2023-06-30 $2,030,587 148,002
2020-12-31 $1,533,101 22,831
2020-09-30 $1,543,654 30,003
2020-06-30 $942,250 25,000