Login
Super Investors MAINSAIL MANAGEMENT COMPANY, LLC
MM

MAINSAIL MANAGEMENT COMPANY, LLC

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$66M
Positions
1
Quarter ended
September 30, 2025
Filed
November 06, 2025

Reported portfolio value by quarter (12 quarters reported)

$142M $66M
Q4 22 Q3 23 Q2 24 Q1 25 Q3 25

$142M in Q4 2022 → $66M now. Hover for any quarter.

Holdings

As reported for the quarter ended September 30, 2025. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Brilliant Earth Group Inc 100.0% Unchanged 31,898,071 $66M

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q3 2025

quarter ended September 30, 2025 · filed November 06, 2025

Company Action Shares changed Value of change % of portfolio
ST Service Titan Inc Exited −205,948 −$22.1M —

Q2 2025

quarter ended June 30, 2025 · filed August 04, 2025

Company Action Shares changed Value of change % of portfolio
ST Service Titan Inc Trimmed −137,298 −$14.7M 33.4%
Soundthinking Inc Exited −91,939 −$1.56M —

Q1 2025

quarter ended March 31, 2025 · filed May 13, 2025

Company Action Shares changed Value of change % of portfolio
Brilliant Earth Group Inc Trimmed −2,700 −$4.27K 59.6%

Q4 2024

quarter ended December 31, 2024 · filed May 13, 2025

Company Action Shares changed Value of change % of portfolio
ST Service Titan Inc New +343,246 +$35.3M 34.1%

Q3 2024

quarter ended September 30, 2024 · filed November 13, 2024

No position changes this quarter.

Q2 2024

quarter ended June 30, 2024 · filed August 12, 2024

No position changes this quarter.

Q1 2024

quarter ended March 31, 2024 · filed May 07, 2024

No position changes this quarter.

Q4 2023

quarter ended December 31, 2023 · filed February 12, 2024

Company Action Shares changed Value of change % of portfolio
Brilliant Earth Group Inc Trimmed −65,000 −$242K 98.1%

Create Account

Sign up for free to unlock this feature.

Already have an account? Sign in

Premium Feature

This feature requires a premium subscription to unlock unlimited historical data and advanced analysis tools.

Premium includes:

  • Unlimited historical financial data
  • Advanced analytics and insights
  • Priority support