Form 144 - Report of proposed sale of securities:
SEC Accession No. 0001950047-25-007122
Filing Date
2025-09-15
Accepted
2025-09-15 16:27:21
Documents
1

Document Format Files

Seq Description Document Type Size
1 primary_doc.html 144  
1 primary_doc.xml 144 5450
  Complete submission text file 0001950047-25-007122.txt   6840
Mailing Address 1601 TRAPELO ROAD SUITE 116 WALTHAM MA 02451
Business Address
Rowland Stephen Eric (Reporting) CIK: 0001639368 (see all company filings)

Type: 144

Mailing Address 125 SUMMER STREET, FLOOR 6 BOSTON MA 02110
Business Address 125 SUMMER STREET, FLOOR 6 BOSTON MA 02110 800-338-1744
Klaviyo, Inc. (Subject) CIK: 0001835830 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 144 | Act: 33 | File No.: 001-41806 | Film No.: 251314649
SIC: 7372 Services-Prepackaged Software
(CF Office: 06 Technology)