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Insider · CIK 0001543760

Mainsail Partners III, L.P.

owner

Files at BRLT (Brilliant Earth Group, Inc.). First filing -, latest -.

In brief

Mainsail Partners III, L.P. files SEC Form 4 as 10% owner at BRLT (Brilliant Earth Group, Inc.). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.

A track record needs three past buys with six months of prices behind them; Mainsail Partners III, L.P. has 0, so none is measured yet.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 0
$0 bought, $0 sold

Signals

This insider’s open-market buys and sells, scored.

No scored open-market trades yet.

Planned sales

Form 144 notices this insider filed before selling restricted or control stock, newest first.

FiledCompanySharesValueSale datePast 3 months
Aug 10, 2026 BRLT
Brilliant Earth Group, Inc.
48,824
0.29% of outstanding
$62kAug 10, 2026none
Dec 28, 2023 BRLT
Brilliant Earth Group, Inc.
48,824
0.40% of outstanding
$176kDec 28, 2023$167k
Dec 19, 2023 BRLT
Brilliant Earth Group, Inc.
48,824
0.40% of outstanding
$174kDec 19, 2023none

Transactions

Every row this insider has filed, 0 in all, newest first.

No transactions on file.

Questions about Mainsail Partners III, L.P.

Answered from the filings on this page, as of the latest one.

Is Mainsail Partners III, L.P. buying or selling?

Mainsail Partners III, L.P. has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.

How did Mainsail Partners III, L.P.'s past buys perform?

Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Mainsail Partners III, L.P. has 0.

Where does Mainsail Partners III, L.P. file Form 4?

Mainsail Partners III, L.P. has filed Form 4 at BRLT (Brilliant Earth Group, Inc.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Mainsail Partners III, L.P.: insider trades and track record | InsiderTell