Arch Venture Fund X Overage LP

Continuation vehiclemanaged by Arch Venture Partners· Delaware
Vintage
2018
Form D sold
$636M
Reported gross assets
$530M
Form ADV, Sep 14, 2026
HarvestFundraising status unknownADV: Venture Capital Fund
More
As of · the latest observation of this vehicle; each figure below carries its own filing date

6 additional principals, 2 additional placement agents

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 LP report
    public disclosures

    1 public LP report name this vehicle; the latest, Alaska Permanent Fund Corporation as of 31 Dec 2025, shows $25M committed.

    A named LP and its own performance figures are the strongest outside read on a fund.

    FactPublic pension and endowment private-markets disclosures (CalPERS, CalSTRS, WSIB, NYSCRF, Texas TRS, UTIMCO ...)For LPs, fund-of-fundsLimited partners →
Drawing the relationship network…
Amounts, each with its basis
Vintage
2018basis: form d first sale
Target
unknownnot announced
First close
unknownnever inferred from a Form D
Final close
unknownonly from an announcement or an LP disclosure
Announced size
unknown
Form D offering
$675Mwhat may be sold, not what was raised; file 021-324501, sworn by the adviser or filed under this vehicle
Form D sold
$636Mas of the filing of Oct 25, 2019, 68 investors
First sale
Nov 16, 2018
Reported GAV
$530Mon the Form ADV filed Sep 14, 2026; the fund's assets, never its size or dry powder
Owners (ADV)
76
Reported on ADV
Mar 22, 2019 to Sep 14, 2026
Fundraising evidence
Unknown
latest Form D 2019-10-25, older than 15 months (fr-1)
evidence dated Oct 25, 2019.
Lifecycle
Harvest
vintage over 7 years, still reported
age years: 8first sale: Nov 16, 2018vintage year: 2018adv gav as of: Sep 14, 2026vintage basis: Form d first saleform d sold: $636Mform d offering: $675Mform d latest filed at: Oct 25, 2019
The fund's own reporting through time
9 Form ADV filings
FiledTypeGross asset value OwnersMin. investmentAdviser-ownedAudit
Mar 22, 2019Venture Capital Fund$492M
47$5.0M3%yes
Mar 23, 2020Venture Capital Fund$724M
73$5.0M3%yes
Nov 2, 2020Venture Capital Fund$724M
73$5.0M3%yes
Mar 26, 2021Venture Capital Fund$1.1B
73$5.0M3%yes
Mar 29, 2022Venture Capital Fund$1.9B
73$5.0M3%yes
Mar 29, 2023Venture Capital Fund$1.7B
75$5.0M3%yes
Mar 28, 2024Venture Capital Fund$1.6B
75$5.0M3%yes
Mar 30, 2026Venture Capital Fund$530M
76$5.0M3%
Sep 14, 2026$530M
76$5.0M3%
Principals and agents
9 principals on Form D, 0 placement agents
  • Arch Venture Partners X, LP Director
  • Steven L. Gillis Executive Officer
  • Arch Venture Partners X Overage, LP Director
Service providers
5 named on Form ADV Schedule D and Form D
Limited partners and their reported performance
1 public LP report
LPVintage (LP’s)CommittedPaid inDistributedRemaining valueNet IRRMultipleAs of
Alaska Permanent Fund Corporation apfc.org2018$25.0MNot disclosedNot disclosedNot disclosednot meaningful yetunknownDec 31, 2025
Known LPs and allocators
3 relationships, public pensions and the allocator graph, each counted once
AllocatorTypeAmountDateSource
Alaska Permanent Fund CorporationSOVEREIGN LINKED US ALLOCATOR$25.0M
committed
reported as of Dec 31, 2025Fact Pension disclosure
The Grantham Foundation for the Protection of the EnvironmentFOUNDATION$2.5M
fair value on the foundation's return
reported as of Dec 31, 2024Fact IRS Form 990 / 990-PF e-file returns
Rockefeller Brothers Fund IncFOUNDATION$12.3M
fair value on the foundation's return
reported as of Dec 31, 2024Fact IRS Form 990 / 990-PF e-file returns
Investments attributed to this vehicle
0
No investment attributed to this vehicle. The firm’s investments sit on the firm; a fund gets one only when a source names the vehicle.
Timeline
4 events
  1. Dec 31, 2025
    APFC reports Arch Venture Fund X Overage LP: $25,000,000 committed, vintage 2018
    LP commitment disclosed Fact Pension disclosure
  2. Oct 25, 2019
    ARCH Venture Fund X Overage, L.P. filed Form D/A: $635,750,000 sold of $675,000,000, Venture Capital Fund
    Form D filed Fact Form D
  3. Mar 22, 2019
    Arch Venture Fund X Overage LP first reported on Form ADV by Arch Venture Partners (Venture Capital Fund), GAV $491,615,238
    Fund first reported on Form ADV Fact Form ADV
  4. Oct 26, 2018
    ARCH Venture Fund X Overage, L.P. filed Form D: no sales yet of $600,000,000, Venture Capital Fund
    Form D filed Fact Form D
Evidence
48 observations
Every observation on this vehicle
  • Adv pdf fund: 530,417,149 Sep 14, 2026 Fact Form ADV
  • Entity type: Limited Partnership Fact Form D
  • Entity type: Limited Partnership Oct 25, 2019 Fact Form D
  • Entity type: Limited Partnership Oct 26, 2018 Fact Form D
  • Form D fund type: Venture Capital Fund Fact Form D
  • Form D fund type: Venture Capital Fund Oct 25, 2019 Fact Form D
  • Form D fund type: Venture Capital Fund Oct 26, 2018 Fact Form D
  • Form D industry group: Pooled Investment Fund Fact Form D
  • Form D industry group: Pooled Investment Fund Oct 25, 2019 Fact Form D
  • Form D industry group: Pooled Investment Fund Oct 26, 2018 Fact Form D
  • Amendment: true Fact Form D
  • Amendment: true Oct 25, 2019 Fact Form D
  • Amendment: false Oct 26, 2018 Fact Form D
  • Revenue range (Form D): Not Applicable Fact Form D
  • Revenue range (Form D): Not Applicable Oct 25, 2019 Fact Form D
  • Revenue range (Form D): Not Applicable Oct 26, 2018 Fact Form D
  • Incorporated: withinFiveYears Fact Form D
  • Incorporated: withinFiveYears Oct 25, 2019 Fact Form D
  • Incorporated: withinFiveYears Oct 26, 2018 Fact Form D
  • Jurisdiction: Delaware Fact Form D
  • Jurisdiction: Delaware Oct 25, 2019 Fact Form D
  • Jurisdiction: Delaware Oct 26, 2018 Fact Form D
  • Amount sold (Form D): $636M Fact Form D
  • Amount sold (Form D): $636M Oct 25, 2019 Fact Form D
  • Amount sold (Form D): $0 Oct 26, 2018 Fact Form D
  • Offering amount (Form D): $675M Fact Form D
  • Offering amount (Form D): $675M Oct 25, 2019 Fact Form D
  • Offering amount (Form D): $600M Oct 26, 2018 Fact Form D
  • Exemptions: 06b, 3C, 3C.1, 3C.7 Fact Form D
  • Exemptions: 06b, 3C, 3C.1, 3C.7 Oct 25, 2019 Fact Form D
  • Exemptions: 06b, 3C, 3C.1, 3C.7 Oct 26, 2018 Fact Form D
  • First sale: 2018-11-16 Fact Form D
  • First sale: 2018-11-16 Oct 25, 2019 Fact Form D
  • Investors (Form D): 68 Fact Form D
  • Investors (Form D): 68 Oct 25, 2019 Fact Form D
  • Investors (Form D): 0 Oct 26, 2018 Fact Form D
  • Minimum investment (Form D): 0 Fact Form D
  • Minimum investment (Form D): 0 Oct 25, 2019 Fact Form D
  • Minimum investment (Form D): 0 Oct 26, 2018 Fact Form D
  • Securities offered: pooled Fact Form D
  • Securities offered: pooled Oct 25, 2019 Fact Form D
  • Securities offered: pooled Oct 26, 2018 Fact Form D
  • Office address: Fact Form D
  • Office address: Oct 25, 2019 Fact Form D
  • Office address: Oct 26, 2018 Fact Form D
  • Year of incorporation: 2018 Fact Form D
  • Year of incorporation: 2018 Oct 25, 2019 Fact Form D
  • Year of incorporation: 2018 Oct 26, 2018 Fact Form D

Relationships across DFX

on 3 other DFX graphs · 15 capital paths
Across the graphs

Arch Venture Fund X Overage LP is the same institution as 3 records in Allocators, RIA and Wealth and Family Offices.

Allocators1RIA and Wealth1Family Offices1

DFX found 3 relationships across 3 datasets

Which record it is in each graph, what it is called there, and how the two were matched.

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

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Capital chain

Arch Venture Fund X Overage LP sits on 15 traced paths of capital across the graphs.

Allocator to VC fund to manager to company

DFX traced 15 paths of capital through this record

Every record on each path, what it committed or lent, and as of when.

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

Derived from allocator disclosures, BDC schedules and SEC filings; confidence is the weakest hop.

Checking your plan…

Record history

4 dated events on the change ledger, latest event first
  • LP commitment disclosed
    2025-12-31source on record
  • Form D filed
    2019-10-25source on record
  • Fund first reported on ADV
    2019-03-22source on record

+1 more change on this record's ledger

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

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.