Insider · CIK 0001991099

Bialecki Andrew

Reports to the SEC for 1 company · BOSTON, MA

sec.gov

Transactions

Companies

Filings

CIK

0001991099

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-05-26	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+213K sh	—	—	212,529
2026-05-26	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−213K sh	$14.61	−$3.11M	0
2026-05-26	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−213K sh	—	—	66,731,589
2026-05-19	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+200K sh	—	—	200,000
2026-05-19	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−200K sh	$14.88	−$2.98M	0
2026-05-19	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−200K sh	—	—	66,944,118
2026-05-12	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+200K sh	—	—	200,000
2026-05-12	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−58.7K sh	$14.97	−$878K	141,316
2026-05-12	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−141K sh	$14.46	−$2.04M	0
2026-05-12	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−200K sh	—	—	67,144,118
2026-04-14	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+200K sh	—	—	200,000
2026-04-14	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−109K sh	$17.39	−$1.9M	90,858
2026-04-14	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−90.9K sh	$16.94	−$1.54M	0
2026-04-14	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−200K sh	—	—	67,344,118
2026-04-07	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+200K sh	—	—	200,000
2026-04-07	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−200K sh	$18.63	−$3.73M	0
2026-04-07	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−200K sh	—	—	67,544,118
2026-03-31	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+200K sh	—	—	200,000
2026-03-31	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−200K sh	$19.42	−$3.88M	0
2026-03-31	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−200K sh	—	—	67,744,118
2026-03-24	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+200K sh	—	—	200,000
2026-03-24	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−200K sh	$18.17	−$3.63M	0
2026-03-24	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−200K sh	—	—	67,944,118
2026-03-17	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+200K sh	—	—	200,000
2026-03-17	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−97.4K sh	$19.60	−$1.91M	102,621
2026-03-17	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−103K sh	$19.15	−$1.97M	0
2026-03-17	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−200K sh	—	—	68,144,118
2026-03-10	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+207K sh	—	—	206,827
2026-03-10	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−206K sh	$19.96	−$4.11M	700
2026-03-10	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−700 sh	$19.34	−$13.5K	0
2026-03-10	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−207K sh	—	—	68,344,118
2026-03-03	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+200K sh	—	—	200,000
2026-03-03	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−154K sh	$18.86	−$2.9M	45,978
2026-03-03	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−46K sh	$17.90	−$823K	0
2026-03-03	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−200K sh	—	—	68,550,945
2026-02-24	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+200K sh	—	—	200,000
2026-02-24	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−160K sh	$16.86	−$2.7M	39,644
2026-02-24	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−39.6K sh	$16.38	−$649K	0
2026-02-24	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−200K sh	—	—	68,750,945
2026-01-27	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+155K sh	—	—	155,219
2026-01-27	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−151K sh	$25.34	−$3.82M	4,530
2026-01-27	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−4,530 sh	$24.94	−$113K	0
2026-01-27	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−155K sh	—	—	68,950,945
2026-01-20	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+168K sh	—	—	167,926
2026-01-20	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−167K sh	$24.16	−$4.04M	796
2026-01-20	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−796 sh	$23.29	−$18.5K	0
2026-01-20	KVYOKlaviyo, Inc. · Series B Common StockC Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	−168K sh	—	—	69,106,164
2026-01-13	KVYOKlaviyo, Inc.C Conversion	Director, Co-Chief Executive Officer, 10% Owner	CConversion	+141K sh	—	—	140,646
2026-01-13	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−50.3K sh	$27.62	−$1.39M	90,327
2026-01-13	KVYOKlaviyo, Inc.S Sale	Director, Co-Chief Executive Officer, 10% Owner	SSale	−90.3K sh	$27.29	−$2.47M	0

Recent filings

Accepted (ET)
May 284
Bialecki Andrew0001470831-26-000495
SEC(opens sec.gov)
May 204
Bialecki Andrew0001470831-26-000479
SEC(opens sec.gov)
May 144
Bialecki Andrew0001470831-26-000440
SEC(opens sec.gov)
Apr 164
Bialecki Andrew0001470831-26-000375
SEC(opens sec.gov)
Apr 94
Bialecki Andrew0001470831-26-000355
SEC(opens sec.gov)
Apr 24
Bialecki Andrew0001470831-26-000342
SEC(opens sec.gov)

Companies

Klaviyo, Inc.Director, Co-Chief Executive Officer, 10% OwnerKVYO

Address

C/O KLAVIYO, INC. 125 SUMMER STREET, 6TH FLOOR

BOSTON, MA, 02110