Klaviyo, Inc.
Total Trades
91
Buys
4
Sells
86
Largest Trade
N/A
Insiders
13
Institutional Funds
202
Inst. Value
$1M+
Activist Filings
45
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Edmond Landon | Chief Legal Officer | SELL | $100K–$500K | 15K | $20.16 | Mar 6, 2026 |
| Bialecki Andrew | CEO | SELL | $1M+ | 200K | $18.64 | Mar 6, 2026 |
| Bialecki Andrew | CEO | SELL | $1M+ | 200K | $16.76 | Feb 27, 2026 |
| Whalen Amanda | CFO | SELL | $100K–$500K | 14K | $18.88 | Feb 18, 2026 |
| Ceran Jennifer | Director | BUY | $100K–$500K | 16K | $18.38 | Feb 17, 2026 |
| Bialecki Andrew | CEO | SELL | $1M+ | 155K | $25.33 | Jan 29, 2026 |
| Bialecki Andrew | CEO | SELL | $1M+ | 168K | $24.16 | Jan 22, 2026 |
| Whalen Amanda | CFO | SELL | $100K–$500K | 14K | $25.83 | Jan 16, 2026 |
| Edmond Landon | Chief Legal Officer | SELL | $100K–$500K | 10K | $25.83 | Jan 16, 2026 |
| Bialecki Andrew | CEO | SELL | $1M+ | 141K | $27.41 | Jan 15, 2026 |
| Bialecki Andrew | CEO | SELL | $1M+ | 154K | $29.03 | Jan 8, 2026 |
| Bialecki Andrew | CEO | SELL | $1M+ | 100K | $32.97 | Dec 23, 2025 |
| Edmond Landon | Chief Legal Officer | SELL | $100K–$500K | 14K | $31.38 | Dec 19, 2025 |
| Whalen Amanda | CFO | SELL | $100K–$500K | 14K | $31.38 | Dec 19, 2025 |
| Hallen Ed | Director | SELL | $1M+ | 118K | $30.36 | Dec 19, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 239K | $29.61 | Dec 17, 2025 |
| Rowland Stephen Eric | President | SELL | $100K–$500K | 7K | $29.45 | Dec 17, 2025 |
| Hallen Ed | Director | SELL | $15K–$50K | 757 | $30.15 | Dec 17, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 231K | $29.71 | Dec 11, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 143K | $28.63 | Dec 4, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 145K | $27.76 | Nov 26, 2025 |
| Edmond Landon | Chief Legal Officer | SELL | $100K–$500K | 14K | $27.59 | Nov 21, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 147K | $27.16 | Nov 20, 2025 |
| Rowland Stephen Eric | President | SELL | $100K–$500K | 7K | $27.39 | Nov 18, 2025 |
| Galvin Carmel | Chief People Officer | SELL | $100K–$500K | 11K | $27.51 | Nov 18, 2025 |
| Whalen Amanda | CFO | SELL | $100K–$500K | 15K | $28.60 | Nov 18, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 140K | $29.74 | Nov 13, 2025 |
| Hallen Ed | Director | SELL | $1M+ | 62K | $30.04 | Nov 13, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 137K | $28.86 | Oct 2, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 211K | $35.45 | Sep 25, 2025 |
| Hallen Ed | Director | SELL | $1M+ | 90K | $31.71 | Sep 17, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 226K | $32.35 | Sep 17, 2025 |
| Rowland Stephen Eric | President | SELL | $100K–$500K | 7K | $31.88 | Sep 17, 2025 |
| Whalen Amanda | CFO | SELL | $100K–$500K | 15K | $31.50 | Sep 12, 2025 |
| St. Ledger Susan | Director | SELL | $100K–$500K | 3K | $32.20 | Sep 12, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 220K | $31.96 | Sep 11, 2025 |
| SUMMIT PARTNERS L P | 10% Owner | SELL | $1M+ | 4.0M | $31.87 | Sep 10, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 223K | $31.00 | Sep 4, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 227K | $31.50 | Aug 28, 2025 |
| SUMMIT PARTNERS L P | 10% Owner | SELL | $1M+ | 975K | $30.01 | Aug 27, 2025 |
| Rowland Stephen Eric | President | SELL | $100K–$500K | 7K | $31.56 | Jul 16, 2025 |
| Whalen Amanda | CFO | SELL | $100K–$500K | 15K | $31.66 | Jul 14, 2025 |
| Rowland Stephen Eric | President | SELL | $100K–$500K | 7K | $34.56 | Jun 17, 2025 |
| Whalen Amanda | CFO | SELL | $500K+ | 15K | $33.47 | Jun 13, 2025 |
| SUMMIT PARTNERS L P | 10% Owner | SELL | $1M+ | 4.0M | $33.35 | Jun 5, 2025 |
| SUMMIT PARTNERS L P | 10% Owner | SELL | $1M+ | 4.0M | $33.00 | May 20, 2025 |
| Bialecki Andrew | CEO | SELL | $1M+ | 11.0M | $32.90 | May 17, 2025 |
| Edmond Landon | Chief Legal Officer | SELL | $100K–$500K | 10K | $34.85 | May 17, 2025 |
| Rowland Stephen Eric | President | SELL | $100K–$500K | 14K | $34.93 | May 17, 2025 |
| Galvin Carmel | Chief People Officer | SELL | $100K–$500K | 11K | $35.01 | May 17, 2025 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 202 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| SUMMIT PARTNERS L P | 18.9M | $1M+ | SH |
| Capital International Investors | 12.8M | $1M+ | SH |
| ALLIANCEBERNSTEIN L.P. | 4.7M | $1M+ | SH |
| Sands Capital Alternatives, LLC | 3.6M | $1M+ | SH |
| Whale Rock Capital Management LLC | 3.1M | $1M+ | SH |
| FEDERATED HERMES, INC. | 2.9M | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 2.9M | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 2.9M | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 2.9M | $1M+ | SH |
| Capital Research Global Investors | 2.6M | $1M+ | SH |
| GREENOAKS CAPITAL PARTNERS LLC | 2.3M | $1M+ | SH |
| RENAISSANCE TECHNOLOGIES LLC | 1.8M | $1M+ | SH |
| Clearbridge Investments, LLC | 1.6M | $1M+ | SH |
| NORGES BANK | 1.5M | $1M+ | SH |
| Fiera Capital Corp | 1.5M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.4M | $1M+ | SH |
| Capital World Investors | 1.1M | $1M+ | SH |
| STATE STREET CORP | 1.1M | $1M+ | SH |
| Bienville Capital Management, LLC | 969K | $1M+ | SH |
| SANDS CAPITAL MANAGEMENT, LLC | 929K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
Capital International Investors
SC 13G · Feb 13, 2026
9.3%
12.8M shares
SC 13G/A · Feb 10, 2026
35.1%
78.2M shares
SC 13G/A · Jan 8, 2026
10.5%
14.5M shares
Shopify Strategic Holdings 3 LLC
SC 13D/A · Nov 14, 2025
18.9%
32.0M shares
Summit Partners Growth Equity Fund IX-A, L.P.
SC 13G/A · Nov 13, 2025
7.1%
11.1M shares
SC 13G · Nov 7, 2025
8.4%
10.3M shares
SC 13G/A · Nov 5, 2025
19.4%
32.9M shares
SC 13G/A · Nov 5, 2025
37.7%
83.1M shares
SC 13G · Nov 5, 2025
6.7%
8.2M shares
Summit Partners Growth Equity Fund IX-A, L.P.
SC 13G/A · Aug 8, 2025
12.3%
18.2M shares
SC 13G/A · Aug 5, 2025
42.9%
87.8M shares
SC 13G/A · Jul 7, 2025
10.2%
10.7M shares
SC 13G/A · May 14, 2025
3.8%
3.4M shares
SC 13G/A · May 14, 2025
4.4%
4.0M shares
Accel Growth Fund V L.P. ("AGF5")
SC 13G/A · May 13, 2025
1.2%
1.1M shares
Summit Partners Growth Equity Fund IX-A, L.P.
SC 13G/A · May 7, 2025
17.7%
22.9M shares
SC 13G/A · May 7, 2025
10.5%
11.1M shares
Shopify Strategic Holdings 3 LLC
SC 13D/A · Feb 21, 2025
25.5%
31.0M shares
SC 13G/A · Feb 14, 2025
1.3%
1.1M shares
Capital Research Global Investors
SC 13G/A · Feb 13, 2025
3.8%
3.0M shares
Summit Partners Growth Equity Fund IX-A, L.P.
SC 13G/A · Feb 8, 2025
20.2%
24.1M shares
SC 13G/A · Feb 5, 2025
5.1%
4.0M shares
SC 13G/A · Nov 15, 2024
6.5%
4.7M shares
Sands Capital Global Innovation Fund II, L.P.
SC 13G/A · Nov 14, 2024
3.8%
2.8M shares
Accel Growth Fund V Associates L.L.C. ("AGF5A")
SC 13G/A · Nov 14, 2024
1.7%
1.3M shares
SC 13G/A · Nov 14, 2024
0.0%
0 shares
SC 13G/A · Nov 12, 2024
9.7%
7.1M shares
Capital Research Global Investors 95-1411037
SC 13G · Nov 12, 2024
7.3%
5.3M shares
Summit Partners Growth Equity Fund IX-A, L.P.
SC 13G/A · Nov 8, 2024
23.1%
27.4M shares
SC 13G/A · Nov 4, 2024
9.7%
7.1M shares
SC 13G/A · Nov 4, 2024
9.7%
7.1M shares
SC 13G/A · Oct 31, 2024
3.0%
2.1M shares
Shopify Strategic Holdings 3 LLC
SC 13D/A · Jul 30, 2024
30.1%
30.3M shares
SC 13G · Mar 7, 2024
4.7%
1.8M shares
AllianceBernstein L.P. 13-4064930
SC 13G · Feb 14, 2024
5.1%
1.9M shares
The Vanguard Group - 23-1945930
SC 13G · Feb 13, 2024
5.7%
2.1M shares
SC 13G · Feb 13, 2024
44.7%
33.0M shares
SC 13G · Feb 13, 2024
70.8%
98.9M shares
Sands Capital Global Innovation Fund II, L.P.
SC 13G · Feb 13, 2024
6.4%
2.8M shares
Accel Growth Fund V Associates L.L.C. (“AGF5A”)
SC 13G · Feb 13, 2024
4.1%
1.6M shares
SC 13G · Feb 1, 2024
21.4%
11.1M shares
Summit Partners Growth Equity Fund IX-A, L.P.
SC 13G · Jan 31, 2024
33.2%
28.2M shares
SC 13G · Jan 29, 2024
6.0%
2.2M shares
Shopify Strategic Holdings 3 LLC
SC 13D · Dec 11, 2023
44.4%
29.6M shares
SC 13G · Sep 28, 2023
10.0%
3.1M shares