Mainsail Management Company, LLC

In its 13F for Q1 2025 (holdings as of March 31, 2025, filed May 13, 2025), Mainsail Management Company, LLC reported 3 stock positions worth $84.6 million. Its top holding was Brilliant Earth Class A (BRLT) at 59.6% of the portfolio, followed by Servicetitan Class A (TTAN, 38.6%) and Soundthinking (SSTI, 1.8%). Compared with Q4 2024, it reduced 1. The biggest sale was Brilliant Earth Class A (BRLT, shares −0%).

Most Recent 13F
Q3 2025
Location
AUSTIN, TX
CIK
0001883367
Portfolio Value
$84.6M (Q1 2025)
SEC Filing
0001883367-25-000003 ↗ filed May 13, 2025

Holdings Value

0$50.0M$100.0M$150.0M Q1 2024: $96.8M Q1 2024 Q2 2024: $71.9M Q2 2024 Q3 2024: $69.3M Q3 2024 Q4 2024: $103.5M Q4 2024 Q1 2025: $84.6M $84.6M Q1 2025 Q2 2025: $66.1M Q2 2025 Q3 2025: $66.0M Q3 2025

Holdings 3 stocks · $84.6M
BRLT Brilliant Earth Group Inc. Class A 59.57% 31,898,071 $50.4M Reduce -0.0%
TTAN Servicetitan Inc. Class A 38.59% 343,246 $32.6M No change
SSTI Soundthinking Inc. 1.84% 91,939 $1.6M No change

Portfolio Sells Q4 2024 → Q1 2025
BRLT Brilliant Earth Group Inc. Class A Reduce -0.0% 59.57% −5.15

Portfolio Buys Q4 2024 → Q1 2025
None this quarter.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q3 2025 1$66.0MBRLT
Q2 2025 2$66.1MBRLT, TTAN
Q1 2025 3$84.6MBRLT, TTAN, SSTI
Q4 2024Amended 3$103.5MBRLT, TTAN, SSTI
Q3 2024 2$69.3MBRLT, SSTI
Q2 2024 2$71.9MBRLT, SSTI
Q1 2024 2$96.8MBRLT, SSTI