SourcingSourcing

MAINLINE INVESTMENT ADVISERS, LLC

B53
CRD 159045·SEC 801-72761·WYNNEWOOD, PA
AUM
$109.9M
$100M-$500M
Est. Revenue
$1.1M
@ 1% on AUM
Est. EBITDA
$330K
@ 30% margin
Est. Deal Value
$2.6M
@ 8× EBITDA

Identity

Registrations & legal identity

Legal name
MAINLINE INVESTMENT ADVISERS, LLC
CRD
159045
SEC file #
801-72761
EIN
—
DBA names
—

Economics

AUM
$109.9M
AUM band
$100M-$500M
AUM trajectory
'20'26
$161.2M → $109.9M▼ -32%
Client mix
Pooled Investment Vehicles9
Individuals High Net Worth7

Operations

Employees (total)
4
Advisory staff (per ADV)
3
Advisory staff (5-yr trend)
'20'26
7 advisors → 3 advisors▼ -57%
Primary office
WYNNEWOOD PA
Branches
—

Custodian & Brokerage

Primary custodian
E*Tradelow confidence
Services offered
Portfolio mgmt — individualsPortfolio mgmt — pooled vehicles
Fee basis
% of AUMFixed feesPerformance-based feesOther Compensation

Filings

Latest ADV filing
04/28/2026
ADV-W filed at
—
Website
mainlineinvestmentadvisers.com

Compliance

Disclosures (firm)
0
Trademark
—
Additional signalsExpand ▾

Ownership & succession ★

Who controls the firm + pre-computed succession flags

Top Owner Name
MAINLINE INVESTMENT PARTNERS,
Top Owner Pct
87.5
Top Owner Entity Kind
DE
Owner Count
4
Control Persons
MAINLINE INVESTMENT PARTNERS,
CLAPPER, DAVID, ANDREW
Solo Advisor Indicator
No
Succession Risk Solo Owner
No
Is Parent Owned Subsidiary
Yes

Availability / M&A ★

Already-acquired = skip; deal comps

Adv W Filed
No

Web presence ★

Stale website = winding down

Web Signal Quality
ok
Rdap Domain
MAINLINEINVESTMENTADVISERS.COM
Rdap Domain Creation Date
2013-10-29T20:55:36Z
Rdap Firm Age Years
13
Rdap Firm Age Band
10-20y
Rdap Registrar
GoDaddy.com, LLC

Retirement-plan book (Form 5500) ★

401(k)/plan business — cross-sell value

Retirement Plan Book
No

SEC EDGAR

Edgar Registered
No

Local market & wealth

Rank targets by how wealthy the local market is

Soi High Wealth Score
0.5463
Soi Zip Pct 200k Plus
0.3421
Soi Zip Returns 200k Plus
2,330
Soi Zip Total AGI
1,763,911
Fdic Zip Total Deposits
13,306,507,000
Fdic Zip Branch Count
178
Fdic Zip Top Banks
Wells Fargo Bank, National Association
Citizens Bank of Pennsylvania

Compliance & brand

Firm Registration Status
active

All other collected signals (23)

Everything else we've pulled for this record, not yet curated into a section.

Adv W Recently Filed
No
Bc Firm Active Bc Count
0
Bc Firm Active IA Count
2
Bc Firm IAR Count
2
Custodian Candidates
Full
E*trade4
Equity Trust4
Fdic Zip Branches Raw
The Bryn Mawr Trust CompanyWynnewood, PA
Meridian BankWynnewood, PA
Fdic Zip HHI
1165.81
Fdic Zip Top Bank Share Pct
23.65
Fdic Zip Year
2025
Firm Has Custody
Yes
Mailing Office Differs
No
Rdap Domain Expiration Date
2028-10-29T20:55:36Z
Rdap Domain Last Changed
2023-10-30T12:33:09Z
Rdap Nameservers
Ns33.domaincontrol.comNs34.domaincontrol.com
Rdap Secure Dns Enabled
No
Rdap Status
Client Delete ProhibitedClient Renew ProhibitedClient Transfer ProhibitedClient Update Prohibited
Soi Year
2022
Soi Zip Distribution
Stub 1
AGI12,368
Returns1,280
Stub 2
AGI24,889
Returns670
Stub 3
AGI40,157
Returns640
Soi Zip Total Business Income
85,594
Soi Zip Total Cap Gains
201,831
Soi Zip Total Dividends
79,951
Soi Zip Total Returns
6,810
Trust Company Affiliate
No

People (3)

3
CLAPPER, DAVID, ANDREW
IAR · Executive Officer · 2.5%
5644079
LANDMAN, WILLIAM, ALAN
IAR · Executive Officer · 2.5%
4342118
DONNA MARIE RITTERSHAUSEN
Executive Officer · 2.5%
1480201