Seifdune Management, LP

Institutional venture firmSEC venture capital fund adviserRaising· San Francisco, Californiaseifdune.com

Seifdune is a global investment firm building and capitalizing category-defining technology businesses.

In the firm's own words, from its website.

Reported fund assets
$174M
sum of its funds' Form ADV filings, last 30 months
Investment team
1
Latest vintage
2026
Contact decision makers
More
Ask DFX about thisView relationshipsFind contactsFundsInvestmentsTeam (1)
As of · the latest observation of this organization; filed figures are as of its latest Form ADV

1 additional investment, fund or LP, 1 verified contact (1 firm phone)

Every relationship, signal and contact on this record, with the source on each.

Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

What matters now

  1. 1 vehicle
    on Form D, 18 months

    $25.4M reported sold so far.

    A Form D is filed when a vehicle takes its first money, so these are open to LPs now.

    FactSEC Form D filingsFor LPs, fund-of-funds, placement agentsVehicles →

People to know

View all people
  • Syed Armaan Ali
    Owner
    Why: Named with investment responsibility
    No route on file yet

Relationship network

5 connected entities

From financing rounds and every investor named in them, Form ADV and Form D filings, the firm's funds and team, and disclosed LP commitments in the venture capital graph. A round's amount is the size of the round, not money that moved between two investors.

Some relationships on this record are counted rather than named here. They open with the full profile.

Seifdune Management, LP
San Francisco, CA

1 more fund on this record

Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

Reading the network
  • Fund or vehicle
  • Person

Co-investors are read from the rounds: three or more shared rounds is a strong observed relationship, two a repeat co-investor, one a single round. Funds and people are structural. Nothing is scored that a reader cannot check.

Darker lines were active in the last 24 months or are current; lighter lines are older or undated.

How am I connected?

Name your firm, a company or a person, and DFX finds the published routes to Seifdune Management, LP: a shared portfolio company or board, a prior employer, a co-investor, a shared LP or service provider. Every step is a filed or published record with its source; none is a guess about who knows whom.

See how you connect to Seifdune Management, LP

Includes 3 days of DFX Intelligence. Then $199/month unless canceled.

Investing

0 companies on record, 0 new in 12 months
Investments on record
0 companies, 0 partner-attributed
No investment on record yet. Edges arrive from the firm’s portfolio page, financing announcements, and Form D board seats.
Stated thesis versus observed behaviour
no observed deals yet
Stated (the firm’s website)
Sectors
not stated or not yet read
Stages
not stated or not yet read
Geography
global
Check size
not stated; DFX does not estimate checks from round sizes
Observed (from deals on record)
Stage at participation: no observed deals yet
Stage at first entry: no observed deals yet
Sectors: no observed deals yet
lead rate no observed dealsfollow-on rate no observed dealsnew companies, 12 months 0

Team

1 current, 0 departed
Decision makers
who to call first, and why; then everyone else by function
  • Syed Armaan Ali · Owner
    Why this person: Named with investment responsibility

Ranked by the role the firm or its filing states, a route on file and deals led. Every reason is read from the record, never inferred. Routes are published by the person or the firm (their bio, the team page or a filing) and are revealed on a plan; data bought from a provider is never shown, and a route printed at a firm the person has since left is held back.

Investment team
1 current, 0 departed
Contacts
1 firm phone

1 firm phone on record, each with its source. Values open with the complete profile.

Funds and LPs

4 vehicles, 0 LPs disclosed
Funds and vehicles
4 reported
VehicleTypeVintageLifecycleReported GAVOwnersForm D soldLatest Form D
Seifdune Liwa, LLCFund2026 form d first saleNewly closedunknownunknown$25.4M
of $25.4M
Jun 3, 2026
Seifdune Semiconductors I, LPFund2023 form d first saleActive deployment$173M
Sep 12, 2026
26$31.8MJun 6, 2024
SD Particles I, LPFund2023 form d first saleActive deployment$1.1M
Sep 12, 2026
4$1.0MJul 29, 2024
Limited partners
0 LPs, 0 disclosed commitments
No LP commitment on record. An LP edge needs a public disclosure with a quote: a pension report (see Limited partners for the plans read), a fund announcement naming the LP, or a Form ADV owner. The fund page carries the LP’s reported performance.
Known LPs and allocators
0 relationships across the firm's funds, from public pensions and the allocator graph
No allocator names this firm or its funds in a public disclosure DFX holds.

Relationships across DFX

0 co-investors · on 1 other DFX graph
Co-investors
0 counted from shared deals, for the whole firm
No co-investor relationship yet: these are derived only from rounds and portfolio listings the graph has seen both investors on.
Across DFX and the capital chainon 1 other DFX graph Show
Across DFX
  • The same institution is held on RIA and Wealth, matched by identifier. See which records
Across the graphs

Seifdune Management, LP is the same institution as 1 record in RIA and Wealth.

RIA and Wealth1

The joined record opens with the product, beside every other relationship on this page.

Checking your plan…

Evidence and history

2 dated events, 32 observations from 3 sources
Timeline
2 dated events
  1. seen on or beforeSep 12, 2026
    Seifdune Management, LP: MICRO_VC -> INSTITUTIONAL_VC (venture manager, reported GAV $174M across 3 vehicles)
    Classification changedClassificationInferenceno URL
  2. May 29, 2026
    Seifdune Management, LP appears on the SEC adviser roster (ERA, venture capital fund adviser exemption)
    First SEC adviser filingOrganizationFactForm ADV
Identity and regulatory footprint
Address, phone, Form ADV filing and ownersForm ADV filed May 29, 2026 · 2 private fundsShow
Headquarters
San Francisco, CAadviserinfo.sec.gov
Office address
unknownadviserinfo.sec.gov
Business phone
unknownadviserinfo.sec.gov
Website
seifdune.com
SEC adviser type
Exempt reporting adviseradviserinfo.sec.gov
SEC exemption claimed
Venture capital fund adviseradviserinfo.sec.govItem 2.B(1): advises solely venture capital funds
Latest Form ADV
May 29, 2026
Private funds reported
2 (2 venture capital funds)adviserinfo.sec.gov
Private fund gross assets, adviser total
$174Madviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
Owners on Schedule A
Seifdune, LLC (General Partner), owns under 5%
Classification history
Every classification this record has carried3 on recordShow
  1. Sep 23, 2026
    Institutional venture firm (confirmed, 95%)
    Venture manager, reported GAV $174M across 4 vehicles
  2. Sep 13, 2026
    Institutional venture firm (confirmed, 95%)
    Venture manager, reported GAV $174M across 3 vehicles
  3. Sep 12, 2026
    Micro VC (confirmed, 95%)
    Venture manager, reported GAV $0.0M across 1 vehicle
Evidence
32 observations from 3 sources
Every observation behind this profile, with its source, date and class
FactValueEffectiveClassSource
Why admittedVC exemption, VC funds reportedMay 29, 2026FactForm ADV
SEC exemption claimedVenture capital fund adviserMay 29, 2026FactForm ADV
SEC adviser typeExempt reporting adviserMay 29, 2026FactForm ADV
Latest Form ADV filing2026-05-29May 29, 2026FactForm ADV
Adv pdf loadedadv-pdf-1Sep 12, 2026FactForm ADV
SEC statusERA - ActiveMay 29, 2026FactForm ADV
SEC status effective2026-05-29May 29, 2026FactForm ADV
Business phoneMay 29, 2026FactForm ADV
Contact page urlSep 30, 2026Factno URL
Contact page urlSep 16, 2026Factno URL
DescriptionSep 30, 2026Factno URL
DescriptionSep 16, 2026Factno URL
DescriptionSep 13, 2026Factno URL
HeadquartersSan Francisco, CAMay 29, 2026FactForm ADV
Office addressMay 29, 2026FactForm ADV
Legal formLimited PartnershipMay 29, 2026FactForm ADV
Portfolio pageSep 30, 2026Factno URL
Portfolio pageSep 16, 2026Factno URL
Portfolio pageSep 13, 2026Factno URL
Private funds reported2May 29, 2026FactForm ADV
Private fund gross assets (reported)$174MMay 29, 2026FactForm ADV
Stated geographyglobal
“geography words on the home page”
Sep 30, 2026Factno URL
Stated geographyglobal
“geography words on the home page”
Sep 16, 2026Factno URL
Stated geographyglobal
“geography words on the home page”
Sep 13, 2026Factno URL
Team pageSep 30, 2026Factno URL
Team pageSep 16, 2026Factno URL
Team pageSep 13, 2026Factno URL
Venture funds reported2May 29, 2026FactForm ADV
WebsiteMay 29, 2026FactForm ADV
Site titleSep 30, 2026Factno URL
Site titleSep 16, 2026Factno URL
Site titleSep 13, 2026Factno URL
How this is scored
Scores, classification basis and filing advisersInstitutional venture firm, confirmedShow
Importance
19
moderate
Active deployment
60
high
Emerging
0
low
Freshness
100
high
Institutional venture firmSEC exempt reporting adviser

Venture manager, reported GAV $174M across 4 vehicles

The inputs behind each score
importance
gav: $0 · funds: 0.33 · people: 0.04 · investments: 0 · co investors: 0
active deployment
investments 12m: 0 · fund raising 18m: 1 · people joined 12m: 0 · vintage within 3y: 1 · latest investment at: not scored
emerging manager
fund count: 4 · reported gav: $174M · first adv filing: 2026-05-29 · years since first filing: 0.3

Fits, record history and connections

scored matches for this investor, every identity change, every edge

Record history

2 dated events on the change ledger, latest event first
  • Organization classification changed
    2026-09-12
  • Adviser's first ADV filing
    2026-05-29source on record

The ledger records every merge, rename and reclassification this record went through and the dated filings observed on it, so the identity on this page can be traced to the records it was built from. The ledger's own sentences name other records, so they show with the names.

Not yet on record: new companies, 12 mo.