DFX Intelligence

Data Factory

Private equityFundunknownprivate equity fund

Wilblairco 1998, L.L.C. (closed to New Investors)

managed by William Blair & Company L.L.C.

This is the graph view. The full profile, with its team, deals and sources, is on Private Equity.Open the full profile →

Search this name across graphsid dfx:pe:3f83812f-47aa-412a-97ad-89a802712cff

Data as of Sep 13, 2026 (this record's last observation) from federal regulator filings. Page built Sep 19, 2026, 9:14 PM UTC and rebuilt at most every 15 minutes.

Relationships: 1
Dated events: 1
On other graphs: 1
Observed: n/a to Sep 13, 2026

Across DFX

same identity by shared identifier, citation, or a bridge measured by hand

RIA / Wealth Managementidentity

WILBLAIRCO 1998, L.L.C. (CLOSED TO NEW INVESTORS)

Private fund · shared adv fund id

Facts

fact = as filed or announced; derived = computed by DFX; estimate = a band, never a point

Manager: William Blair & Company L.L.C.
Vintage: 1998 (name_year)derived
Strategy: ADV 7.B.(1) fund of funds = Y
ADV gross asset value: $1.2Mas of 2014-03-28
Peak reported GAV: $1.5M
Reporting years: 3
ADV first reported: Mar 30, 2012
LPs disclosed: 0
Placement agents: 0
Attributed investments: 0

Reporting history

Report year	Filed	ADV fund type	GAV	Owners
2014	Mar 28, 2014	Private Equity Fund	$1.2M	53
2013	Jul 12, 2013	Private Equity Fund	$1.4M	53
2012	Mar 30, 2012	Private Equity Fund	$1.5M	50

Relationships

Manages (1)

← William Blair & Company L.L.C.FirmPrivate Equity Fund
Mar 30, 2012 to presentfactForm ADV

Dated events

1 bookkeeping events (roster, classification and holdings changes) folded below

Show 1 bookkeeping events

Occurred
Mar 30, 2012
Wilblairco 1998, L.L.C. (closed to New Investors) first reported on Form ADV by William Blair & Company L.L.C. (Private Equity Fund), GAV $1,500,000

Provenance

Graph: Private Equity
Canonical id: dfx:pe:3f83812f-47aa-412a-97ad-89a802712cff
First observed: n/a
Last observed: Sep 13, 2026 6 days ago
Source families: Federal regulator filings
1 registered feed stand behind this record; each fact above carries its own dates and, where the publisher serves one, its document.
Resolution: Identity across graphs by shared identifier (CRD, CIK, EIN, ADV fund id, individual CRD) or citation; a name match is shown as a candidate and never merged.

Wilblairco 1998, L.L.C. (closed to New Investors)

managed by William Blair & Company L.L.C.

This is the graph view. The full profile, with its team, deals and sources, is on Private Equity.Open the full profile →

Search this name across graphsid dfx:pe:3f83812f-47aa-412a-97ad-89a802712cff

Data as of Sep 13, 2026 (this record's last observation) from federal regulator filings. Page built Sep 19, 2026, 9:14 PM UTC and rebuilt at most every 15 minutes.

Report year

Filed

ADV fund type

GAV

Owners

2014

Mar 28, 2014

Private Equity Fund

$1.2M

2013

Jul 12, 2013

Private Equity Fund

$1.4M

2012

Mar 30, 2012

Private Equity Fund

$1.5M