Who are Harte Hanks, Inc.'s major customers?

Harte Hanks, Inc. (HHS) key customers include: TOP-CUSTOMER, CUSTOMERS, EXISTING-CUSTOMERS, TOP-TEN-CUSTOMERS, TOP-TWENTY-FIVE-CUSTOMERS and 2 more. View the full customer network at chainsifter.com/chain/HHS.

What sector is Harte Hanks, Inc. in?

Harte Hanks, Inc. (HHS) operates in the general sector. ChainSifter tracks its verified supply chain relationships including suppliers, customers, and strategic partners.

Harte Hanks, Inc. (HHS): 8 Verified Supply Chain Relationships

0Suppliers

7Customers

1Debt Items

0Related Chains

Source-Backed Evidence Depth

Harte Hanks, Inc. (HHS) is shown with relationship data already present in ChainSifter's database. Counts below come from stored supply-chain records and filing/source URLs where available; missing source URLs are not filled in or estimated.

9Total relationships

2Distinct source URLs

8High confidence

0.860Average confidence

2026-10-28Latest database update

ChainSifter does not infer unreported suppliers, customers, ownership, acquisitions, debt exposure, revenue dependency, or future supply-chain events on this public page.

Harte Hanks, Inc. Suppliers

No suppliers on recordHarte Hanks, Inc. does not appear to disclose named supplier relationships in its verified regulatory filings, or upstream suppliers have not yet been identified. Our system processes new filings continuously.

Harte Hanks, Inc. Customers

Ticker	Name	Confidence	Evidence
TOP-CUSTOMER	TOP-CUSTOMER	92%	Our top customer represented 10.5 % and 9.4 % of total revenue for the years ended December 31, 2025 and 2024, respectively.
CUSTOMERS	CUSTOMERS	90%	Revenue Solutions segment revenue decreased $0.9 million, or 9.9% , from the prior year quarter due to the loss of customers and reduced demand from existing customers.
EXISTING-CUSTOMERS	EXISTING-CUSTOMERS	90%	Customer Care segment revenue decreased $0.1 million, or 1.1%, primarily due to decreased volume from existing customers, which was partially offset by increased volume from new customers.
TOP-TEN-CUSTOMERS	TOP-TEN-CUSTOMERS	90%	Top ten customers 43.2 % 46.2 %
TOP-TWENTY-FIVE-CUSTOMERS	TOP-TWENTY-FIVE-CUSTOMERS	90%	Top twenty-five customers 68.3 % 72.1 %
NEW-CUSTOMERS	NEW-CUSTOMERS	80%	Customer Care segment revenue decreased $0.1 million, or 1.1%, primarily due to decreased volume from existing customers, which was partially offset by increased volume from new customers.
PRESENTATION-BACKGROUND-HARTE-HANKS-INC	PRESENTATION-BACKGROUND-HARTE-HANKS-INC	62%	ng profits — 838 — — — 838 Net loss — — ( 811 ) — — ( 811 ) Other comprehensive loss — — — — ( 1,383 ) ( 1,383 ) Balance at December 31, 2025 $ 12,221 $ 109,558 $ 813,812 $ ( 900,085 ) $ ( 14,980 ) $…

Harte Hanks, Inc. Debt Obligations

Instrument	Description	Confidence	Evidence
HHS-DEBT	Debt stack $22.0M	90%	Market cache reports total debt of $22.0M.

Harte Hanks, Inc. Acquisitions

No acquisitions on recordNo completed or pending acquisitions found in our database for Harte Hanks, Inc..

Harte Hanks, Inc. Ownership

Holder	Name	Confidence	Evidence
HHS-OWNER-BLAIR-WILLIAM-CO-IL	BLAIR WILLIAM & CO/IL	90%	13F overlay lists BLAIR WILLIAM & CO/IL as top holder; 23 tracked holders.

Harte Hanks, Inc. Extended Supply Chain Network

No secondary connectionsNo correlated companies found through shared supply chain relationships.

Harte Hanks, Inc. Supply Chain