Biospring Management, LLC

Institutional venture firmSEC venture capital fund adviser· New York, New Yorkbiospring.com

Institutional venture firm, based in New York, New York, reporting $345M of fund assets on its funds' Form ADV filings.

Composed from this organization's classification, location and filed figures.

Reported fund assets
$345M
sum of its funds' Form ADV filings, last 30 months
New companies, 12 mo
None
Investment team
10
Latest vintage
2025
Contact decision makers
More
Ask DFX about thisView relationshipsFind contactsInvestments (1)Team (21)Funds
As of · the latest observation of this organization; filed figures are as of its latest Form ADV

18 additional team members, 8 additional investments, funds and LPs, 1 event, 26 verified contacts (24 professional url, 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.

Nothing material in the last 180 days. Last change: 1 Jul 2025, $10M reported sold so far.

People to know

View all people
  • Qi Wang
    CIO, Portfolio Implementation, PIMCO
    Why: Chief investment officer: owns the allocation decision
    Profile
  • Michelle Detwiler
    Managing Partner
    Why: Managing partner: runs the firm
    Profile
  • Jennifer Lum
    Manager And Member
    Why: Named with investment responsibility
    Profile

Relationship network

36 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.

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

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 Biospring Management, LLC: 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 Biospring Management, LLC

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

Investing

1 company on record, 0 new in 12 months
Investments on record
1 company, 0 partner-attributed
CompanyRoundRolePartnerRound sizeThis investorDateSource
Seran Bioscienceportfolio listingunknownunknownunknownunknownSep 29, 2026Fact Company website
Stated thesis versus observed behaviour
1 observed deals
Stated (the firm’s website)
Sectors
biotech, marketplaces, logistics, industrial
Stages
not stated or not yet read
Geography
not stated
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
unknown 100%
lead rate no observed dealsfollow-on rate no observed dealsnew companies, 12 months 0

Team

21 current, 1 departed
Decision makers
who to call first, and why; then everyone else by function
  • Qi Wang · CIO, Portfolio Implementation, PIMCO
    Why this person: Chief investment officer: owns the allocation decision; Named with investment responsibility; Confirmed current on the firm's own site 2026-10-01
    LinkedIn or profile link on file (firm website), confirmed 2026-10-01, confidence 90%
  • Michelle Detwiler · Managing Partner
    Why this person: Managing partner: runs the firm; Named with investment responsibility; Confirmed current on the firm's own site 2026-10-01
    LinkedIn or profile link on file (firm website, their bio on the firm's website), confirmed 2026-10-01, confidence 90%
  • Jennifer Lum · Manager And Member
    Why this person: Named with investment responsibility; Confirmed current on the firm's own site 2026-10-01
    LinkedIn or profile link on file (firm website, their bio on the firm's website), confirmed 2026-10-01, confidence 90%

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. 3 with a route on file. 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
21 current, 1 departed
1 departed (kept with end dates)
  • Bob Pozen · Former Chair, MFS; Former President, Fidelity Investments · ? to Sep 30, 2026 Inference
Contacts
1 published business email, 1 firm phone, 24 professional url

1 published business email, 1 firm phone, 24 professional url on record, each with its source. Values open with the complete profile.

Funds and LPs

9 vehicles, 1 LPs disclosed
Funds and vehicles
9 reported, 1 no longer reported
VehicleTypeVintageLifecycleReported GAVOwnersForm D soldLatest Form D
Biospring Partners 2, LPFund2025 form d first saleNewly closed$26.6M
Mar 27, 2026
4$10.0M
of $10.0M
Jul 1, 2025
Biospring Partners Abz Fund V, L.P.Fund2022 form d first saleActive deployment$30.9M
Mar 27, 2026
3$16.5M
of $16.5M
Aug 24, 2022
Biospring Partners Abz Fund III, L.P.Fund2021 form d first saleMature$7.2M
Mar 27, 2026
6$2.1M
of $2.1M
May 17, 2021
Limited partners
1 LPs, 2 disclosed commitments
Known LPs and allocators
4 relationships across the firm's funds, from public pensions and the allocator graph
AllocatorTypeFundAmountDateSource
Texas Municipal Retirement SystemSTATE RETIREMENT SYSTEMBiospring Partners Fund II, L.P.$50.0M
committed
committed Jun 11, 2025Fact Pension disclosure
Los Angeles City Employees' Retirement SystemMUNICIPAL RETIREMENT SYSTEMBiospring Partners Fund II, L.P.$25.0M
committed
reported as of Dec 31, 2025Fact Pension disclosure
Los Angeles City Employees' Retirement SystemMUNICIPAL RETIREMENT SYSTEMBiospring Partners Fund LP$20.0M
committed
reported as of Dec 31, 2025Fact Pension disclosure

Relationships across DFX

3 co-investors · on 2 other DFX graphs
Co-investors
3 counted from shared deals, for the whole firm
Across DFX and the capital chainon 2 other DFX graphs · 6 capital paths Show
Across DFX
  • The same institution is held on Allocators, RIA and Wealth, matched by identifier. See which records
Across the graphs

Biospring Management, LLC 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

Biospring Management, LLC sits on 6 traced paths of capital across the graphs.

Allocator to VC fund to manager to companyAllocator commitments to a manager

DFX traced 6 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

6 dated events, 55 observations from 3 sources
Timeline
6 dated events
  1. Mar 27, 2026
    Biospring Partners 2, LP first reported on Form ADV by Biospring Management, LLC (Venture Capital Fund), GAV $26,581,924
    Fund first reported on Form ADVFundsInferenceBiospring Partners 2, LPForm ADV
  2. Mar 27, 2026
    Biospring Partners 1, LP first reported on Form ADV by Biospring Management, LLC (Venture Capital Fund), GAV $2,802,171
    Fund first reported on Form ADVFundsInferenceBiospring Partners 1, LPForm ADV
  3. Mar 27, 2026
    Biospring Partners Fund II, LP first reported on Form ADV by Biospring Management, LLC (Venture Capital Fund)
    Fund first reported on Form ADVFundsInferenceBiospring Partners Fund II, L.P.Form ADV
  4. Mar 31, 2023
    Biospring Partners Abz Fund V, L.P. first reported on Form ADV by Biospring Management, LLC (Venture Capital Fund), GAV $16,456,542
    Fund first reported on Form ADVFundsFactBiospring Partners Abz Fund V, L.P.Form ADV
  5. Mar 31, 2023
    Biospring Partners Tech I, L.P. no longer reported on Form ADV by Biospring Management, LLC
    Fund no longer reportedFundsInferenceBiospring Partners Tech I, L.P.Form ADV
Identity and regulatory footprint
Address, phone, Form ADV filing and ownersForm ADV filed Mar 27, 2026 · 9 private fundsShow
Headquarters
New York, NYadviserinfo.sec.gov
Office address
unknownadviserinfo.sec.gov
Business phone
unknownadviserinfo.sec.gov
Website
biospring.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 27, 2026
Private funds reported
9 (9 venture capital funds)adviserinfo.sec.gov
Private fund gross assets, adviser total
$345Madviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
Classification history
Every classification this record has carried3 on recordShow
  1. Sep 23, 2026
    Institutional venture firm (confirmed, 95%)
    Venture manager, reported GAV $345M across 9 vehicles
  2. Sep 15, 2026
    Institutional venture firm (confirmed, 95%)
    Venture manager, reported GAV $284M across 8 vehicles
  3. Sep 12, 2026
    Institutional venture firm (confirmed, 95%)
    Venture manager, reported GAV $284M across 6 vehicles
Evidence
60 observations from 3 sources
Every observation behind this profile, with its source, date and class
FactValueEffectiveClassSource
Why admittedVC exemption, VC funds reportedMar 27, 2026FactForm ADV
SEC exemption claimedVenture capital fund adviserMar 27, 2026FactForm ADV
SEC exemption claimedVenture capital fund adviserMar 21, 2024FactForm ADV
SEC adviser typeExempt reporting adviserMar 27, 2026FactForm ADV
SEC adviser typeExempt reporting adviserMar 27, 2026FactForm ADV
SEC adviser typeExempt reporting adviserMar 21, 2024FactForm ADV
First Form ADV filing2022-06-03Mar 27, 2026FactForm ADV
First Form ADV filing2022-06-03Mar 21, 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 filing2026-03-27Mar 27, 2026FactForm ADV
Latest Form ADV filing2026-03-27Mar 27, 2026FactForm ADV
Latest Form ADV filing2024-03-21Mar 21, 2024FactForm ADV
SEC statusERA - ActiveMar 27, 2026FactForm ADV
SEC status effective2022-06-03Mar 27, 2026FactForm ADV
Venture share of reported funds1Mar 27, 2026FactForm ADV
Venture share of reported funds1Mar 21, 2024FactForm ADV
Business phoneMar 27, 2026FactForm ADV
Business phoneMar 21, 2024FactForm ADV
Contact page urlSep 30, 2026Factno URL
Contact page urlSep 16, 2026Factno URL
HeadquartersNew York, NYMar 27, 2026FactForm ADV
HeadquartersNew York, NYMar 21, 2024FactForm ADV
Office addressMar 27, 2026FactForm ADV
Office addressMar 21, 2024FactForm ADV
Legal formLimited Liability CompanyMar 27, 2026FactForm ADV
Legal formLimited Liability CompanyMar 21, 2024FactForm ADV
Portfolio pageSep 30, 2026Factno URL
Portfolio pageSep 16, 2026Factno URL
Portfolio pageSep 15, 2026Factno URL
Private funds reported9Mar 27, 2026FactForm ADV
Private funds reported9Mar 27, 2026FactForm ADV
Private funds reported6Mar 21, 2024FactForm ADV
Private fund gross assets (reported)$345MMar 27, 2026FactForm ADV
Private fund gross assets (reported)$345MMar 27, 2026FactForm ADV
Private fund gross assets (reported)$284MMar 21, 2024FactForm ADV
Schedule a diffsadiff-1Sep 25, 2026FactForm ADV
Stated sectorsBiotech, marketplaces, logistics, industrial
“sector words on the home page”
Sep 30, 2026Factno URL
Stated sectorsAI, biotech, medtech, marketplaces, logistics, industrial
“sector words on the home page”
Sep 16, 2026Factno URL
Stated sectorsAI, biotech, medtech, marketplaces, logistics, industrial
“sector words on the home page”
Sep 15, 2026Factno URL
Team pageSep 30, 2026Factno URL
Team pageSep 16, 2026Factno URL
Team pageSep 15, 2026Factno URL
Venture funds reported9Mar 27, 2026FactForm ADV
Venture funds reported9Mar 27, 2026FactForm ADV
Venture funds reported6Mar 21, 2024FactForm ADV
WebsiteMar 27, 2026FactForm ADV
WebsiteMar 21, 2024FactForm ADV
Site titleSep 30, 2026Factno URL
Site titleSep 16, 2026Factno URL
Site titleSep 15, 2026Factno URL
How this is scored
Scores, classification basis and filing advisersInstitutional venture firm, confirmed · 2 filing advisers share this firmShow
Importance
38
elevated
Active deployment
25
moderate
Emerging
0
low
Freshness
100
high
Institutional venture firmSEC exempt reporting adviser

Venture manager, reported GAV $345M across 9 vehicles

This firm files as 2 advisers on biospring.com: Biospring Management Partners, L.P.. Each keeps its own CRD, funds and filings; the grouping is the website each swore to on Form ADV and is recomputed every pass.

The inputs behind each score
importance
gav: $0 · funds: 0.83 · people: 0.44 · investments: 0 · co investors: 0.19
active deployment
investments 12m: 0 · fund raising 18m: 0 · people joined 12m: 0 · vintage within 3y: 1 · latest investment at: not scored
emerging manager
fund count: 10 · reported gav: $345M · first adv filing: 2022-06-03 · years since first filing: 4.3

Fits, record history and connections

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

Record history

1 dated event on the change ledger, latest event first
  • Adviser's first ADV filing
    2022-06-03source 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.