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Summit Partners Growth Equity Fund IX-B, L.P.

CIK 1634426 · last filed 2024-08-23

Summit Partners Growth Equity Fund IX-B, L.P. is a corporate insider who has filed 13 SEC Form 4 insider transactions across 2 companies since 2021. The most recent filing, for KVYO, was dated Aug 11, 2026. Across all open-market trades the lifetime net is −$138.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $609.8M across reported positions. The firm reports its address in Boston, MA. 33 SEC filings were submitted jointly with Summit Partners Growth Equity Fund IX-A, L.P.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$609.84M

Companies

2

Total Filings

13

Lifetime Open-Market Net

-$138.12M

Filer Profile

Reported Address
222 BERKELEY STREET, 18TH FLOOR
BOSTON, MA 02116
Phone
(617) 824-1000
State of Incorporation
DE
Related Filers
Summit Partners Growth Equity Fund IX-A, L.P. — 33 joint filings, latest 2026-08-13
SUMMIT INVESTORS GE IX/VC IV (UK), L.P. — 31 joint filings, latest 2026-08-13
SUMMIT INVESTORS GE IX/VC IV, LLC — 31 joint filings, latest 2026-08-13
SUMMIT PARTNERS L P — 29 joint filings, latest 2026-08-13
Summit Partners Co-Invest (Kiwi), LP — 26 joint filings, latest 2026-08-13
SUMMIT INVESTORS X (UK), L.P. — same reported address
SUMMIT PARTNERS ENTREPRENEUR ADVISORS GP II, LLC — same reported address
SUMMIT PARTNERS GE IX, L.P. — same reported address
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
KVYO 10%+ Owner 113,850 $16.36 $1.86M -$21.70M 1 2024-08-23
LFST 10%+ Owner 46,875,407 $12.97 $607.97M -$116.42M 1 2021-06-16

Recent Filings

13 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-08-11 KVYO Notice (144) −1,845,131 -$33.88M EDGAR
2026-08-10 LFST Notice (144) −1,088,162 -$11.56M EDGAR
2025-09-08 KVYO Notice (144) −1,476,104 -$49.01M EDGAR
2025-08-18 LFST Notice (144) −3,214,648 -$17.39M EDGAR
2025-06-04 KVYO Notice (144) −1,476,104 -$51.28M EDGAR
2025-05-19 KVYO Notice (144) −1,476,104 -$50.93M EDGAR
2025-03-14 KVYO Notice (144) −738,052 -$23.62M EDGAR
2024-12-09 KVYO Notice (144) −774,955 -$31.32M EDGAR
2024-11-14 KVYO Notice (144) −1,158,323 -$42.80M EDGAR
2024-08-27 KVYO Notice (144) −369,026 -$11.88M EDGAR
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.