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Arch Venture Partners

Institutional venture firmSEC venture capital fund adviserRaising· Chicago, IllinoisARCHVENTURE.COM

ARCH Venture Partners provides seed / early stage venture capital for technology firms in information technology, life sciences, and physical sciences

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

Reported fund assets
$11B
sum of its funds' Form ADV filings, last 30 months
New companies, 12 mo
6
Investment team
38
Latest vintage
2022
Contact decision makers
More
Ask DFX about thisView relationshipsFind contactsInvestments (115)Team (41)Funds
As of · the latest observation of this organization; filed figures are as of its latest Form ADV

42 additional team members, 37 additional co-investors and affiliates, 155 additional investments, funds and LPs, 21 events, 2 verified contacts (1 published business email, 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. 6 companies
    new in 12 months

    6 new companies in the last 12 months.

    A firm writing cheques this quarter is one a founder can pitch now.

    Factfunding announcements, Form D, the firm's portfolio pageFor Founders, co-investorsInvestments →
  2. 4 companies
    portfolio raising

    4 portfolio companies have new financing on record in 6 months without this firm named on the round; the latest on 26 Aug 2026 ($60M sold on Form D).

    A portfolio company raising again is a follow-on decision for the firm and a co-investment opening for others.

    FactSEC Form D filingsFor Co-investors, LPs, lendersInvestments →
  3. 6 deals
    with Decheng Capital

    Invests most often alongside Decheng Capital (6 shared deals) and Catalio Capital Management (5 shared deals).

    pair last observed on record 30 Sep 2026, not a deal date · The firms it syndicates with are the likeliest to see the same deals and to fill out its rounds.

    Measuredshared rounds and portfolio companies on recordFor Founders building a round, co-investorsCo-investors →
  4. 4 of 4
    enter at Series B+

    Enters mostly at Series B or later: 4 of 4 first entries on record.

    rounds to 24 Jun 2026 · Tells a founder whether their round is one this firm writes.

    Derived4 rounds with a stated stage, against the firm's siteFor FoundersInvestments →

People to know

View all people
  • Steve Lazarus
    Co-Founder & Managing Director (1931-2018)
    Why: Founder of the firm
    No route on file yet
  • Robert Taylor Nelsen
    Managing Director, Ceo, And Shareholder
    Why: Runs the firm (chief executive or president)
    No route on file yet
  • Steven Gillis
    Managing Director
    Why: Managing director
    No route on file yet

Relationship network

233 connected entities91 observed rounds35 repeat counterparties11 dated rounds shown here, 2010 to 2025

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.

Click any name or line for the rounds and sources behind it. Line weight is rounds together; dashed lines are inferred.

What stands out
Reading the network
  • Sponsor
  • Company
  • Capital provider
  • 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 Arch Venture Partners: 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 Arch Venture Partners

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

Investing

115 companies on record, 6 new in 12 months
Investments on record
115 companies, 87 partner-attributed
CompanyRoundRolePartnerRound sizeThis investorDateSource
908 Devicesportfolio listingunknownunknownunknownunknownSep 30, 2026Fact Firm website
Accompany Health, Inc.portfolio listingunknownunknownunknownunknownSep 30, 2026Fact Firm website
Agios Pharmaceuticalsportfolio listingunknownunknownunknownunknownSep 30, 2026Fact Firm website
Stated thesis versus observed behaviour
187 observed deals
Stated (the firm’s website)
Sectors
not stated or not yet read
Stages
not stated or not yet read
Geography
chicago, seattle
Check size
not stated; DFX does not estimate checks from round sizes
Self-described
venture capital
Observed (from deals on record)
Stage at participation
series b 75%series c 25%
Stage at first entry
series b 75%series c 25%
Industries, each company once
Life sciences (10)Healthcare services (4)Hardware and deep tech, Software or Tech-enabled and IT services (2)
lead rate 78%follow-on rate 51%new companies, 12 months 6

Team

41 current, 13 departed
Decision makers
who to call first, and why; then everyone else by function
  • Steve Lazarus · Co-Founder & Managing Director (1931-2018)
    Why this person: Founder of the firm; Named with investment responsibility
  • Robert Taylor Nelsen · Managing Director, Ceo, And Shareholder
    Why this person: Runs the firm (chief executive or president); Named with investment responsibility
  • Steven Gillis · Managing Director
    Why this person: Managing director; 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
41 current, 13 departed
14 departed (kept with end dates)
  • Paul Steven Thurk · Managing Director · Nov 1, 2011 to Mar 26, 2021 Inference
  • Robert Nelsen · Co-founder & Managing Director · ? to Sep 30, 2026 Inference
  • Steve Gillis · Managing Director · ? to Sep 16, 2026 Inference
Contacts
1 published business email, 1 firm phone

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

Funds and LPs

15 vehicles, 2 LPs disclosed
Funds and vehicles
15 reported, 4 no longer reported
VehicleTypeVintageLifecycleReported GAVOwnersForm D soldLatest Form D
Arch Venture Fund Xii, LPFund2022 form d first saleActive deployment$3.0B
Sep 14, 2026
108$2.8B
of $2.9B
Apr 1, 2022
Arch Venture Fund Xi, LPFund2020 form d first saleMature$1.6B
Sep 14, 2026
98$1.9B
of $1.9B
Jan 28, 2021
Arch Venture Fund X Overage LPContinuation vehicle2018 form d first saleHarvest$530M
Sep 14, 2026
76$636M
of $675M
Oct 25, 2019
Limited partners
2 LPs, 10 disclosed commitments
Known LPs and allocators
23 relationships across the firm's funds, from public pensions and the allocator graph
AllocatorTypeFundAmountDateSource
Alaska Permanent Fund CorporationSOVEREIGN LINKED US ALLOCATORArch Venture Fund Viii LP$101M
committed
reported as of Dec 31, 2025Fact Pension disclosure
Alaska Permanent Fund CorporationSOVEREIGN LINKED US ALLOCATORArch Venture Fund Viii Overage LP$100M
committed
reported as of Dec 31, 2025Fact Pension disclosure
Alaska Permanent Fund CorporationSOVEREIGN LINKED US ALLOCATORARCH Venture Fund XIII, L.P.$50.0M
committed
reported as of Dec 31, 2025Fact Pension disclosure

Relationships across DFX

92 co-investors · on 2 other DFX graphs
Co-investors
92 counted from shared deals, for the whole firm
Across DFX and the capital chainon 2 other DFX graphs · 123 capital paths Show
Across DFX
  • The same institution is held on Allocators, RIA and Wealth, matched by identifier. See which records
Across the graphs

Arch Venture Partners is the same institution as 2 records in Allocators and RIA and Wealth.

Allocators1RIA and Wealth1

DFX found 2 relationships across 2 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.

Checking your plan…

Capital chain

Arch Venture Partners sits on 123 traced paths of capital across the graphs.

Allocator to VC fund to manager to company

DFX traced 123 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…

Evidence and history

26 dated events, 74 observations from 3 sources
Timeline
26 dated events
  1. Aug 31, 2026
    Arch Venture Partners filed the first Form D for ARCH Venture Fund XIV, L.P. (fund 14), its next fund after ARCH Venture Fund XIII, L.P.; offering $3.00B
    Fund next filedderived signalInferenceARCH Venture Fund XIV, L.P.no URL
  2. Mar 30, 2026
    Arch Venture Fund Xiii, LP first reported on Form ADV by Arch Venture Partners (Venture Capital Fund), GAV $3,309,714,256
    Fund first reported on Form ADVFundsInferenceARCH Venture Fund XIII, L.P.Form ADV
  3. Mar 29, 2023
    Arch Venture Fund Xii, LP first reported on Form ADV by Arch Venture Partners (Venture Capital Fund), GAV $2,968,529,420
    Fund first reported on Form ADVFundsFactArch Venture Fund Xii, LPForm ADV
  4. Mar 26, 2021
    Paul Steven Thurk (Managing Director) no longer on Schedule A of Arch Venture Partners
    Person leftPeopleInferencePaul Steven ThurkForm ADV
  5. Mar 26, 2021
    Arch Venture Fund Xi, LP first reported on Form ADV by Arch Venture Partners (Venture Capital Fund), GAV $231,850,461
    Fund first reported on Form ADVFundsFactArch Venture Fund Xi, LPForm ADV
Identity and regulatory footprint
Address, phone, Form ADV filing and ownersForm ADV filed Mar 30, 2026 · 13 private fundsShow
Headquarters
Chicago, ILadviserinfo.sec.gov
Office address
unknownadviserinfo.sec.gov
Business phone
unknownadviserinfo.sec.gov
Website
ARCHVENTURE.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
Mar 30, 2026
Private funds reported
13 (13 venture capital funds)adviserinfo.sec.gov
Private fund gross assets, adviser total
$11Badviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
Classification history
Every classification this record has carried4 on recordShow
  1. Sep 23, 2026
    Institutional venture firm (confirmed, 95%)
    Venture manager, reported GAV $10.6B across 15 vehicles
  2. Sep 15, 2026
    Institutional venture firm (confirmed, 95%)
    Venture manager, reported GAV $10.5B across 14 vehicles
  3. Sep 14, 2026
    Institutional venture firm (confirmed, 95%)
    Venture manager, reported GAV $10.5B across 12 vehicles
  4. Sep 12, 2026
    Institutional venture firm (confirmed, 95%)
    Venture manager, reported GAV $10.5B across 11 vehicles
Evidence
81 observations from 3 sources
Every observation behind this profile, with its source, date and class
FactValueEffectiveClassSource
Why admittedVC exemption, VC funds reportedMar 30, 2026FactForm ADV
SEC exemption claimedVenture capital fund adviserMar 30, 2026FactForm ADV
SEC exemption claimedVenture capital fund adviserMar 28, 2024FactForm ADV
SEC adviser typeExempt reporting adviserMar 30, 2026FactForm ADV
SEC adviser typeExempt reporting adviserMar 30, 2026FactForm ADV
SEC adviser typeExempt reporting adviserMar 28, 2024FactForm ADV
First Form ADV filing2012-03-30Mar 30, 2026FactForm ADV
First Form ADV filing2012-03-30Mar 28, 2024FactForm ADV
Adv history loadedadv-hist-1+panel:2026-09-29Sep 30, 2026FactForm ADV
Adv history loadedadv-hist-1+panel:2026-09-25Sep 26, 2026FactForm ADV
Adv history loadedadv-hist-1+panel:2026-09-23Sep 24, 2026FactForm ADV
Adv history loadedadv-hist-1+panel:2026-09-21Sep 23, 2026FactForm ADV
Adv history loadedadv-hist-1+panel:2026-09-22Sep 23, 2026FactForm ADV
Adv history loadedadv-hist-1Sep 12, 2026FactForm ADV
Latest Form ADV filing2026-03-30Mar 30, 2026FactForm ADV
Latest Form ADV filing2026-03-30Mar 30, 2026FactForm ADV
Latest Form ADV filing2024-03-28Mar 28, 2024FactForm ADV
Adv pdf loadedadv-pdf-1Sep 14, 2026FactForm ADV
SEC statusERA - ActiveMar 30, 2026FactForm ADV
SEC status effective2012-03-30Mar 30, 2026FactForm ADV
Venture share of reported funds1Mar 30, 2026FactForm ADV
Venture share of reported funds1Mar 28, 2024FactForm ADV
Business phoneMar 30, 2026FactForm ADV
Business phoneMar 28, 2024FactForm ADV
Contact page urlSep 30, 2026Factno URL
Contact page urlSep 16, 2026Factno URL
DescriptionSep 30, 2026Factno URL
DescriptionSep 16, 2026Factno URL
DescriptionSep 14, 2026Factno URL
HeadquartersChicago, ILMar 30, 2026FactForm ADV
HeadquartersChicago, ILMar 28, 2024FactForm ADV
Office addressMar 30, 2026FactForm ADV
Office addressMar 28, 2024FactForm ADV
Self-described typeVenture capitalSep 30, 2026Factno URL
Self-described typeVenture capitalSep 16, 2026Factno URL
Self-described typeVenture capitalSep 14, 2026Factno URL
Legal formLimited Liability CompanyMar 30, 2026FactForm ADV
Legal formLimited Liability CompanyMar 28, 2024FactForm ADV
Portfolio pageSep 30, 2026Factno URL
Portfolio pageSep 16, 2026Factno URL
Portfolio pageSep 14, 2026Factno URL
Private funds reported13Mar 30, 2026FactForm ADV
Private funds reported13Mar 30, 2026FactForm ADV
Private funds reported13Mar 28, 2024FactForm ADV
Private fund gross assets (reported)$11BMar 30, 2026FactForm ADV
Private fund gross assets (reported)$11BMar 30, 2026FactForm ADV
Private fund gross assets (reported)$11BMar 28, 2024FactForm ADV
Schedule a diffsadiff-1Mar 30, 2026FactForm ADV
Stated geographyChicago, seattle
“geography words on the home page”
Sep 30, 2026Factno URL
Stated geographyChicago, seattle
“geography words on the home page”
Sep 16, 2026Factno URL
Stated geographyChicago, seattle
“geography words on the home page”
Sep 14, 2026Factno URL
Team pageSep 30, 2026Factno URL
Team pageSep 16, 2026Factno URL
Team pageSep 14, 2026Factno URL
Venture funds reported13Mar 30, 2026FactForm ADV
Venture funds reported13Mar 30, 2026FactForm ADV
Venture funds reported13Mar 28, 2024FactForm ADV
WebsiteMar 30, 2026FactForm ADV
WebsiteMar 28, 2024FactForm ADV
Site titleSep 30, 2026Factno URL
Site titleSep 16, 2026Factno URL
Site titleSep 14, 2026Factno URL
How this is scored
Scores, classification basis and filing advisersInstitutional venture firm, confirmedShow
Importance
91
high
Active deployment
61
high
Emerging
0
low
Freshness
100
high
Institutional venture firmSEC exempt reporting adviser

Venture manager, reported GAV $10.6B across 15 vehicles

The inputs behind each score
importance
gav: $1 · funds: 1 · people: 1 · investments: 0.84 · co investors: 0.8
active deployment
investments 12m: 0.88 · fund raising 18m: 1 · people joined 12m: 0 · vintage within 3y: 0 · latest investment at: 2026-06-24
emerging manager
fund count: 19 · reported gav: $11B · first adv filing: 2012-03-30 · years since first filing: 14.5

Fits, record history and connections

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

Fits

27 scored matches, best firstas of
  • score 44.2confidence 90%
    Why: stage fit; activity; cap table
  • score 44.2confidence 90%
    Why: stage fit; activity; cap table
  • score 40.3confidence 100%
    Why: sector fit; geography fit; activity; analogous
    Watch: adjacent portfolio

+24 more scored matches

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

Scored by DFX match engines from the record's observed portfolio, stage, geography and recent activity. A fit is a reason to look, not a mandate; the blockers say what the model could not confirm. Names and the evidence sentences show with the names on this page.

Record history

1 dated event on the change ledger, latest event first
  • Adviser's first ADV filing
    2012-03-30source 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.