United States · Investor

STG – Symphony Technology Group

No observed cheques in the sources we track. That is a limit of our coverage, not a finding about this organisation.

UnknownPrivate equityWebsite unconfirmed

SeedSeries ASeries BSubscriptionSoftwareProductivity Tools

Cheques on record

No rounds observed yetA limit of the sources we read, not a finding about the firm.

Pitch STG – Symphony Technology Group

What they do

Type
Private equity (from a list, unverified)
Cheque size
Not stated
Stages
SeedSeries ASeries BGrowth
Sectors
SubscriptionSoftwareProductivity Tools
Based in
Menlo Park, United States
Cold pitches
Not accepted

A website was listed for this organisation, but we could not confirm it belongs to the firm that wrote these cheques. Either the site never mentions them, or it turned out to be a different company sharing the name. We show neither it nor anything read from it. Tell us the right one.

The record

No rounds observed yet. That is a limit of the sources we read, not a finding about the firm. If it has invested, a round will put it here. Know a round it was in? Tell us.

The team

Named by the firm itself, on a filing, its Form ADV or its company registration5 named

DMDouglas Marshall HainesManaging Director, COOiForm ADV
JTJohnie Tristan TreadwellManaging DirectoriForm ADV
MAMarc Amiel BalaManaging DirectoriForm ADV
SEStephen Edward HenkenmeierManaging Director, CFO, CCOiForm ADV
WFWilliam Francis ChisholmManaging Partner, CIO and Elected ManageriForm ADV

We also hold 4 people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.

What the register says

From the firm's own filings with the SEC, which it must file accurately by law

$13Bassets it managesOct 2026
Registeredinvestment adviserfull reporting to the SEC
Legal name
STG Partners, LLC
SEC number
CRD 291048

Funds on its Form ADV

19 private funds, $12B in gross assets · filed Mar 2024

  1. STG VII-A, L.P.Private equity128 investors$2.8B
  2. STG VII, L.P.Private equity76 investors$1.8B
  3. STG VI-A, L.P.Private equity125 investors$1.4B
  4. Magenta Blocker Aggregator L.P.Private equity227 investors$1.1B
  5. STG V-A, L.P.Private equity41 investors$877M
  6. STG VI, L.P.Private equity78 investors$849M
  7. STG Mercury, L.P.Private equity954 investors$730M
  8. Magenta Unblocked Aggregator L.P.Private equity224 investors$688M
  9. STG AV, L.P.Private equity1,024 investors$511M
  10. STG Allegro, L.P.Private equity53 investors$435M

And 9 more on the filing.

What they claim to have backed

From their own portfolio page (on their website)

9 of 26 we have independently watched raise

CeltraFutureMediavaletMovableinkNomissolutionsRedsealSurveymonkeyWrikeYodleeAvidCaisoftCarrierlogisticsConfienceConstructionEpsswEscalentExtendaretailGocadmiumGreshamtechOffenderwatchQuorekaSai360SkyhighsecurityTaxcalcVerified by MonsterInsightsair.ai

Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded.

Quick answers about STG – Symphony Technology Group

What does STG – Symphony Technology Group invest in?

STG – Symphony Technology Group says it invests in Subscription, Software and Productivity Tools.

Is STG – Symphony Technology Group investing now?

No investments in the last 12 months.

What kind of investor is STG – Symphony Technology Group?

STG – Symphony Technology Group is a private equity firm based in Menlo Park, United States.

How much does STG – Symphony Technology Group manage?

About $13B, as regulatory assets under management (Oct 2026).

When was STG – Symphony Technology Group founded?

STG – Symphony Technology Group was founded in 2002.

Where does this information on STG – Symphony Technology Group come from?

From public registers and its own website, checked and rebuilt every night.

Raising now?

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Built from the rounds we watched, its filings and its own website, refreshed every night. How we count · Report a correction · Is this your firm? Claim it