KVYO · NYSE · Software - Application

Klaviyo

Unifies customer data with marketing automation, analytics, and customer service for B2C brands.

$20.00
After-hours close−0.16 (−0.79%)
At close$20.16(+2.80%)

Breakdown13F · Form 4

Institutions 49.57%148.35M sharesInsiders 24.09%72.09M sharesOther 26.34%78.84M shares

Shares outstanding 299.28M · Float

Float — provider float is below the insider stake.

A Form 4 total here can count shares the filer formally disclaims — an award voted by proxy, for instance — which the holder's own Schedule 13D/G excludes, so where the two disagree the schedule's smaller figure is used.

The provider's float is smaller than the insider stake it should exclude, so it is not shown.

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
Andrew Bialecki · director, 10 percent owner, officer: Co-Chief Executive Officer66.73M22.30%Form 4May 28, 2026
Shopify Strategic Holdings 3 LLC · 10 percent owner16.97M5.67%Form 4Apr 29, 2026
Summit Partners L P · 10 percent owner11.14M3.72%Form 4Aug 13, 2026
Accomplice Fund I, L.P.11.11M10.50%13GMay 7, 2025
Capital International Investors10.48M3.50%13FAug 12, 2026

Institutions13F, as of Jun 30, 2026

298 holders · 148.35M shares · 70 new positions · 169 increased · 77 reduced · 59 closed

HolderShares% outstandingChg q/qFiled
Summit Partners L P18.85M6.30%0Jul 30, 2026
Capital International Investors10.48M3.50%−1.22MAug 12, 2026
Vanguard Portfolio Management LLC7.69M2.57%+160.9KAug 13, 2026
BlackRock, Inc.7.61M2.54%+3.26MAug 7, 2026
FMR LLC6.57M2.19%−3.22MAug 13, 2026
Vanguard Capital Management LLC5.99M2.00%−172.1KAug 13, 2026
Whale Rock Capital Management LLC5.53M1.85%−1.30MAug 14, 2026
Wellington Management Group LLP5.05M1.69%−430.0KAug 14, 2026

Beneficial owners13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Bialecki Andrew35.10%78.16M13GFeb 10, 2026
Hallen Ed19.40%32.88M13GNov 5, 2025
Shopify Inc.incl. Shopify Strategic Holdings 3 LLC18.85%32.03M13DNov 14, 2025
Accomplice Fund I, L.P.10.50%11.11M13GMay 7, 2025
Capital International Investors8.00%11.70M13GMay 14, 2026
Summit Partners Growth Equity Fund IX-A, L.P.7.11%11.14M13GNov 13, 2025
FMR LLC6.70%8.24M13GNov 5, 2025
BlackRock, Inc.5.30%7.46M13GJul 29, 2026
Vanguard Portfolio Management5.17%7.53M13GApr 29, 2026
Vanguard Capital Management5.00%7.05M13GJul 31, 2026

InsidersForm 4

InsiderRoleShares% outstandingFiled
Andrew Bialeckidirector, 10 percent owner, officer: Co-Chief Executive Officer66.73M22.30%May 28, 2026
Shopify Strategic Holdings 3 LLC10 percent owner16.97M5.67%Apr 29, 2026
Summit Partners L P10 percent owner11.14M3.72%Aug 13, 2026
Gomez Luciano Fernandezdirector, officer: Co-Chief Executive Officer2.30M0.77%Aug 18, 2026
Carmel Galvinofficer: Chief People Officer907.5K0.30%Aug 18, 2026
Amanda Whalenofficer: Chief Financial Officer795.2K0.27%Aug 18, 2026
Landon Edmondofficer: Chief Legal Officer539.4K0.18%Aug 18, 2026
Stephen Eric Rowlandofficer: President434.3K0.15%Dec 17, 2025
Ed Hallendirector, 10 percent owner: 133.6K0.04%Dec 19, 2025
Tony Weismandirector125.0K0.04%Jun 11, 2026

5 ten-percent owners hold 33.28M shares by Form 4 — the 13D/G table above shows those stakes, the figure above counts officers and directors only · 1 person has not refiled in the last 18 months (259.0K shares), so they are not in the figure above

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Aug 14, 2026
Amanda Whalenofficer: Chief Financial Officer
Sale14,000$18.47824,192
Aug 11, 2026
Summit Partners L P10 percent owner
Sale5,000,000$17.710
Jul 16, 2026
Amanda Whalenofficer: Chief Financial Officer
Sale14,000$17.75838,192
Jun 18, 2026
Amanda Whalenofficer: Chief Financial Officer
Sale14,000$13.23852,192
May 26, 2026
Andrew Bialeckidirector, 10 percent owner, officer: Co-Chief Executive Officer
Sale212,529$14.610
May 19, 2026
Andrew Bialeckidirector, 10 percent owner, officer: Co-Chief Executive Officer
Sale200,000$14.880
May 18, 2026
Ledger Susan St.director
Sale9,334$14.2710,939
May 14, 2026
Amanda Whalenofficer: Chief Financial Officer
Sale14,000$14.26895,141
May 12, 2026
Andrew Bialeckidirector, 10 percent owner, officer: Co-Chief Executive Officer
Sale · 2 lots200,000$14.610
Apr 20, 2026
Landon Edmondofficer: Chief Legal Officer
Sale9,623$20.00584,124

CongressHouse and Senate disclosures

Not reported.