Entity type
Company
Filer Snapshot
SUMMIT PARTNERS L P
CIK 0000830588. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.
Total filings
56
Latest filing
08 May 2026
Industry
n/a
Filing-backed research brief
Start with the SEC data that changes for this CIK
Latest signal: 13F-HR for Q1 2026. Each card links back to the PortfolioSavvy page where the filing evidence is closest.
Latest 13F portfolio
$670.15M
7 holdings for Q1 2026
Open portfolioLargest parsed holding
KVYO
$366.88M reported value
Open holding13D/G large stake
LFST
31 Mar 2026 · 7.5% ownership
Open 13D/GInsider / owner context
ESMT
07 Mar 2023 · $572.61M
Open owner pageSave this filer page
Create a free account to keep this page in your watchlists. After verification, we will save it automatically and open your saved research list.
Source: SEC Schedule 13D/G
View source filing
SCHEDULE 13G/A filed on 08 May 2026 for CIK 0000830588.
- Parsed SEC ownership signals
-
Parsed SEC ownership coverage
These bars compare filing-backed value available in each disclosure family. Read them as separate lenses, not as one combined ownership total.
13F portfolio$670.15MQuarterly institutional holdings reported on Form 13F.
Forms 3/4/5 positions$822.36MReporting-owner positions with enough filing detail to estimate value.
Latest reported 13F value
13F$670.15MReported market value from the latest parsed Form 13F information table; this is not total assets under management.
Forms 3/4/5 position value
3/4/5$822.36MEstimated from parsed Forms 3/4/5 when filings include enough share and price data.
Largest 13F holdings
13FKVYO LFST AKA AVAH MTSI+2 more
ATEN SBDSLargest symbols in the latest parsed Form 13F information table.
Largest linked holdings
Largest issuer positions linked to this CIK across parsed 13F, 13D/G, and Forms 3/4/5 records.
ESMT LFST ATEN SBDS KVYOLargest 13F holdings
Largest symbols in the latest parsed Form 13F information table.
KVYO LFST AKA AVAH MTSI ATEN SBDSLargest active 13G stakes
Passive or institutional large-stake positions disclosed in parsed Schedule 13G filings.
KVYO LFSTHow to read these SEC ownership signals
- Read each filing family separately: 13F portfolios, 13D/G large stakes, and Forms 3/4/5 owner positions answer different SEC disclosure questions.
- Open the linked research path when you need the filing, CIK, issuer, or CUSIP trail behind a value.
- Business address
- 222 Berkeley Street, 18 Th Floor, Boston, MA, 02116
- Incorporated in
- DE
- Fiscal year end
- 31 December
Ownership signals
CIK-linked ownership evidence from parsed SEC filings.
1 signal
At a glance
Names, identifiers, and filing context for this profile.
1 identity field
EDGAR profile Static EDGAR fields kept behind disclosure so the main profile stays readable. 2 profile fields available
Filer intelligence
What SEC filings say about SUMMIT PARTNERS L P
A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.
Quick read
- Latest parsed 13F shows $670.15M across 7 reported holdings for Q1 2026.
- Largest parsed 13F holding: KVYO at $366.88M.
- 2 recent 13D/G stake rows found; top row is LFST at 7.5% ownership.
- Forms 3/4/5 show insider context for ESMT worth $572.61M.
SEC source mix
Counts show available parsed rows, not one combined ownership total.
Top parsed 13F holdings
Visual share of the latest parsed 13F portfolio. Values are reported market value, not a recommendation.
Top 5 concentration
99%
Share of latest parsed 13F value represented by the visible holdings below.
Top 5 reported value
$661.39M
Compared with $670.15M total 13F value.
Top 5 net change
-$40.64M
Position-value change inside the visible top holdings only.
13F concentration map
A simple visual split of the latest parsed 13F portfolio.
Largest add: MTSI · Largest trim: JAMF
KVYO
LFST
AKA
AVAH
MTSI
Other holdings
13D/G large-stake context
LFST
31 Mar 2026 · Common Stock, par value $0.01 per share
KVYO
30 Sep 2025 · Series A Common Stock, par value $0.001 per share
Forms 3/4/5 insider context
ESMT
07 Mar 2023 · 10% owner
LFST
18 Aug 2025 · 10% owner
ATEN
08 Sep 2022 · 10% owner
SBDS
01 Jan 2026 · 10% owner
Latest update
What changed recently for SUMMIT PARTNERS L P
Latest Schedule 13D/G period: 31 Mar 2026. Open the source-backed page to inspect the fresh filing or facts context.
Update date
08 May 2026
Page type
Filer profile
Latest period
31 Mar 2026
Schedule 13D/G context is visible from filings filed on 08 May 2026.
Benchmark Context
Benchmark context for this company
SUMMIT PARTNERS L P has a source-backed company facts view where you can compare the latest reported metrics with its own recent history and with peer rankings for the same metric.
Compared with
Start on the facts page for period-to-period context, then open a metric ranking when you want to compare the same reported fact across other SEC-reporting companies.
Why this is notable
Latest Schedule 13D/G period: 31 Mar 2026. That gives you a fresh baseline before you compare this company with peers.
- Peer comparisons stay conservative: same metric, compatible units, latest valid company row only.
- Open the facts page first if you want the cleanest path to verification.
Benchmark context is only shown where the app has enough comparable SEC-backed data to keep the interpretation honest.
SEC filing record
CIK 0000830588 filing coverage
Start with this filing record, then use the linked ownership pages when parsed 13F, 13D/G, Forms 3/4/5, or facts data exists for this CIK.
SEC filings
56
First seen
14 Jan 2014
Latest filing
08 May 2026
Entity
Company
Observed form types
13F-HR
13F-HR/A
SCHEDULE 13G/A
Latest Filings
Showing the latest 12 of 56 SEC filings for SUMMIT PARTNERS L P.
SCHEDULE 13G/A
SCHEDULE 13G/A filing
- Filing date
- 08 May 2026
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 08 May 2026
- Reporting date
- 31 Mar 2026
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 06 Feb 2026
- Reporting date
- 31 Dec 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 04 Nov 2025
- Reporting date
- 30 Sep 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR/A
13F-HR/A filing
- Filing date
- 04 Nov 2025
- Reporting date
- 30 Jun 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
SCHEDULE 13G/A
SCHEDULE 13G/A filing
- Filing date
- 08 Aug 2025
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 16 Jul 2025
- Reporting date
- 30 Jun 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
SCHEDULE 13G/A
SCHEDULE 13G/A filing
- Filing date
- 07 May 2025
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 05 May 2025
- Reporting date
- 31 Mar 2025
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
SCHEDULE 13G/A
SCHEDULE 13G/A filing
- Filing date
- 07 Feb 2025
- Reporting date
- Not listed
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 04 Feb 2025
- Reporting date
- 31 Dec 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing
13F-HR
13F-HR filing
- Filing date
- 31 Oct 2024
- Reporting date
- 30 Sep 2024
- SEC evidence
- Open document Open filing
- Next action
- Verify source filing