Firms, funds, partners, companies and rounds from sworn filings, firm sites and announcements, kept as a graph with a date and a source on every edge. Facts, inferences and estimates are labelled as such. A fund target is never a close, GAV is never dry powder, and a round size is never an investor’s check.

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Firms / P••• O•• E••••• C••••••• L•

P••• O•• E••••• C••••••• L•

Institutional venture firmHouston, TXp•••••••••.comSEC venture capital fund adviser

P••• Oak E••••• Capital is a Houston-based private equity firm primarily focused on making investments in upstream oil & gas, mineral rights and the related infrastructure sectors of the energy industry. P••• Oak seeks to identify outstanding energy entrepreneurs with well-defined business plans targeting the core producing basins in North America, as well as acquires …

venture manager, reported GAV $2,266M across 8 vehicles

Importance
47
elevated
Active deployment
55
elevated
Emerging
0
low
Completeness
69
high
Freshness
99
high
Research priority
21
moderate
Identity and regulatory footprint
Headquarters
Houston, TXadviserinfo.sec.gov
Office address
34 S. WYNDEN DR, SUITE 300, Houston, TX, 77056-2531adviserinfo.sec.gov
Business phone
713-571-9393adviserinfo.sec.gov
Website
p•••••••••.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 26, 2026
Private funds reported
12 (12 venture capital funds)adviserinfo.sec.gov
Private fund gross assets
$1.8Badviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
Owners on Schedule A
P••• O•• E••••• H••••••• L•• (General Partner), NA
business email
info@postoakenergy.compostoakenergy.compublished by the subject
business phone
713-571-9393adviserinfo.sec.govpublished by the subject
Stated thesis versus observed behaviour
12 observed deals
Stated (the firm’s website)
Sectors
energy
Stages
not stated or not yet read
Geography
north america, texas
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 n/afollow-on rate n/anew logos, 12 months 12
Funds and vehicles
8 reported
VehicleTypeVintageLifecycleReported GAVOwnersForm D soldLatest Form D
P••• O•• E••••• P••••••• V• L•Fund2023 form d first saleActive deployment$360M
Mar 27, 2024
14$415MNov 19, 2024
P••• I• L•••• W•••• C••••••••• L••SPV or co-invest vehicle2023 adv first reportedActive deployment$22.0M
Mar 27, 2024
2unknownunknown
P••• O•• E••••• P••••••• I•• L•Fund2017 form d first saleHarvest$578M
Mar 27, 2024
32$600M
of $600M
Nov 29, 2017
P••• O•• E••••• P••••••• I••• L•Fund2016 form d first saleHarvest$500M
Mar 27, 2024
32$600MMay 16, 2016
P••• I• R•••••• C••••••••• L••SPV or co-invest vehicle2016 form d first saleHarvest$50.0M
Mar 27, 2024
2$50.0M
of $50.0M
Jul 7, 2016
P••• O•• E••••• P••••••• I•• L•Fund2014 form d first saleHarvest$550M
Mar 27, 2024
24$500MFeb 5, 2014
P••• C•••••••• L•SPV or co-invest vehicleunknownUnknown$166M
Mar 27, 2024
2unknownunknown
P••• O•• E••••• P•••••••• L•FundunknownUnknown$40.0M
Mar 27, 2024
7unknownunknown
GAV is the gross asset value the adviser reported on Form ADV for the vehicle, never the fund’s committed size and never dry powder. Form D sold is the amount sold as of the latest filing, never a final close.
Investment team
6 current, 1 departed
C•••• S• W••••••
Limited Partner · since Sep 1, 2006
Partner
FactIAPD Form ADV Part 1 PDF per firm (current filing, Schedule D 7.B.(1) and Schedule A)
C•••• S• W••••••
Limited Partner · since Sep 1, 2006
Partner
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Partner
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
F•••• W••••• C••••••
Limited Partner · since Apr 1, 2006
Partner
FactIAPD Form ADV Part 1 PDF per firm (current filing, Schedule D 7.B.(1) and Schedule A)
P••••• a• D•••••••
Limited Partner · since Aug 1, 2006
Partner
FactIAPD Form ADV Part 1 PDF per firm (current filing, Schedule D 7.B.(1) and Schedule A)
P••••• a• D•••••••
Limited Partner · since Aug 1, 2006
Partner
FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
1 departed (kept with end dates)
Investments on record
12 edges, 12 companies, 0 partner-attributed
CompanyRoundRolePartnerRound sizeThis investorDateSource
B••••• O•• I••••••••• L••portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
C•• P••••••• L••portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
E••••••••• E••••• I••portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
M••••• M•••••••portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
M••••• M••••••• I•portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
M••••• E••••• P•••••••portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
P•• V•portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
P••• O•• M•••••••portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
P••• O•• M••••••• L•• C•••portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
P••• O•• M••••••• L•• C••• 2•portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
Q••••••• E••••• P••••••• L••portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
T•••••• O•• G•• P••••••• L••portfolio listingunknownunknownunknownunknownSep 16, 2026Fact Venture organization websites (about, team, portfolio, thesis, news pages)
“This investor” is the amount disclosed for this investor alone; it is unknown unless a source said it. The round size is the whole round.
Co-investors
0 relationships from shared deals, counted 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.
Limited partners
0 disclosed
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.
Timeline
10 dated events
  1. Mar 27, 2024
    P••• O•• E••••• P••••••• V• L• first reported on Form ADV by P••• O•• E••••• C••••••• L• (Venture Capital Fund), GAV $360,000,000
    Fund first reported on Form ADVFundsFactP••• O•• E••••• P••••••• V• L•SEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  2. Feb 7, 2023
    P••• I• L•••• W•••• C••••••••• L•• first reported on Form ADV by P••• O•• E••••• C••••••• L• (Venture Capital Fund), GAV $22,000,000
    Fund first reported on Form ADVFundsFactP••• I• L•••• W•••• C••••••••• L••SEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  3. Feb 7, 2023
    R••• J••••• M•••••• (Limited Partner) no longer on Schedule A of P••• O•• E••••• C••••••• L•
    Person leftPeopleInferenceR••• J••••• M••••••SEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  4. Feb 7, 2023
    P••• I• R•••••• C••••••••• L•• first reported on Form ADV by P••• O•• E••••• C••••••• L• (Venture Capital Fund), GAV $50,000,000
    Fund first reported on Form ADVFundsFactP••• I• R•••••• C••••••••• L••SEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  5. Feb 27, 2019
    P••• O•• E••••• P••••••• I•• L• first reported on Form ADV by P••• O•• E••••• C••••••• L• (Venture Capital Fund), GAV $600,000,000
    Fund first reported on Form ADVFundsFactP••• O•• E••••• P••••••• I•• L•SEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  6. Mar 23, 2017
    P••• O•• E••••• P••••••• I••• L• first reported on Form ADV by P••• O•• E••••• C••••••• L• (Venture Capital Fund), GAV $600,000,000
    Fund first reported on Form ADVFundsFactP••• O•• E••••• P••••••• I••• L•SEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  7. Feb 27, 2014
    P••• O•• E••••• P••••••• I•• L• first reported on Form ADV by P••• O•• E••••• C••••••• L• (Venture Capital Fund), GAV $500,000,000
    Fund first reported on Form ADVFundsFactP••• O•• E••••• P••••••• I•• L•SEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  8. Mar 29, 2012
    P••• O•• E••••• C••••••• L• first filed Form ADV (ERA, venture capital fund adviser exemption)
    First SEC adviser filingOrganizationFactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  9. Mar 29, 2012
    P••• C•••••••• L• first reported on Form ADV by P••• O•• E••••• C••••••• L• (Venture Capital Fund), GAV $100,010,000
    Fund first reported on Form ADVFundsFactP••• C•••••••• L•SEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
  10. Mar 29, 2012
    P••• O•• E••••• P•••••••• L• first reported on Form ADV by P••• O•• E••••• C••••••• L• (Venture Capital Fund), GAV $102,990,000
    Fund first reported on Form ADVFundsFactP••• O•• E••••• P•••••••• L•SEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Classification history
  1. Sep 15, 2026
    Institutional venture firm (confirmed, 95%, cls-1)
    venture manager, reported GAV $2,266M across 8 vehicles
  2. Sep 12, 2026
    Institutional venture firm (confirmed, 95%, cls-1)
    venture manager, reported GAV $1,688M across 7 vehicles
Evidence
54 observations from 4 sources
Every observation behind this profile, with its source, date and class
FactValueEffectiveClassSource
Why admittedvc_exemption,vc_funds_reportedMar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
SEC exemption claimedventure_capital_fund_adviserMar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
SEC exemption claimedventure_capital_fund_adviserMar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
SEC adviser typeexempt_reporting_adviserMar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
SEC adviser typeexempt_reporting_adviserMar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
First Form ADV filing2012-03-29Mar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Adv history loadedadv-hist-1Sep 12, 2026FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Latest Form ADV filing2026-03-26Mar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Latest Form ADV filing2024-03-27Mar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
SEC statusERA - ActiveMar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
SEC status effective2012-03-29Mar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Venture share of reported funds1Mar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Business phone713-571-9393Mar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Business phone713-571-9393Mar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Contact page urlhttps://p•••••••••.com/
“contact page linked from the home page”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
DescriptionP••• Oak E••••• Capital is a Houston-based private equity firm primarily focused on making investments in upstream oil & gas, mineral rights and the related infrastructure sectors of the energy industry. P••• Oak seeks to identify outstanding energy entrepreneurs with well-defined business plans targeting the core producing basins in North America, as well as acquires …
“meta description”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
DescriptionP••• Oak E••••• Capital is a Houston-based private equity firm primarily focused on making investments in upstream oil & gas, mineral rights and the related infrastructure sectors of the energy industry. P••• Oak seeks to identify outstanding energy entrepreneurs with well-defined business plans targeting the core producing basins in North America, as well as acquires …
“meta description”
Sep 12, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
HeadquartersHouston, TXMar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
HeadquartersHouston, TXMar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Office address34 S. WYNDEN DR, SUITE 300, Houston, TX, 77056-2531Mar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Office address34 S. WYNDEN DR, SUITE 300, Houston, TX, 77056-2531Mar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Legal formLimited PartnershipMar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Legal formLimited PartnershipMar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Portfolio pagehttps://p•••••••••.com/
“12 entries read”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Portfolio pagehttps://p•••••••••.com/
“12 entries read”
Sep 12, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Private funds reported12Mar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Private funds reported8Mar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Private fund gross assets (reported)$1.8BMar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Private fund gross assets (reported)$2.3BMar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Schedule a diffsadiff-1Mar 26, 2026FactIAPD Form ADV Part 1 PDF per firm (current filing, Schedule D 7.B.(1) and Schedule A)
Stated geographynorth america,texas
“geography words on the home page”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated geographynorth america,texas
“geography words on the home page”
Sep 12, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated sectorsenergy
“sector words on the home page”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Stated sectorsenergy
“sector words on the home page”
Sep 12, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Venture funds reported12Mar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
Venture funds reported8Mar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
WebsiteHTTP://w••.p•••••••••.comMar 26, 2026FactSEC Form ADV monthly roster (registered + exempt reporting advisers)
WebsiteHTTP://w••.p•••••••••.comMar 27, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Site titleHome - P••• Oak E••••• Capital - Private Equity
“title tag”
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Site titleHome - P••• Oak E••••• Capital - Private Equity
“title tag”
Sep 12, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)