Five9, Inc.
Total Trades
143
Buys
0
Sells
117
Largest Trade
N/A
Insiders
15
Institutional Funds
221
Inst. Value
$1M+
Activist Filings
33
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| ZWARENSTEIN BARRY | CFO | EXERCISE | $100K–$500K | 10K | $29.89 | Aug 17, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | SELL | $500K+ | 8K | $86.38 | Aug 3, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | EXERCISE | $100K–$500K | 8K | $14.39 | Aug 3, 2023 |
| ZWARENSTEIN BARRY | CFO | SELL | $1M+ | 13K | $87.70 | Jul 17, 2023 |
| ZWARENSTEIN BARRY | CFO | EXERCISE | $100K–$500K | 13K | $29.89 | Jul 17, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | EXERCISE | $100K–$500K | 8K | $14.39 | Jul 6, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | SELL | $500K+ | 8K | $82.36 | Jul 6, 2023 |
| Burkland Michael | CEO | SELL | $1M+ | 54K | $80.00 | Jun 30, 2023 |
| Burkland Michael | CEO | EXERCISE | $500K+ | 54K | $9.48 | Jun 30, 2023 |
| Burkland Michael | CEO | EXERCISE | $1M+ | 107K | $9.48 | Jun 16, 2023 |
| Burkland Michael | CEO | SELL | $1M+ | 107K | $74.95 | Jun 16, 2023 |
| ZWARENSTEIN BARRY | CFO | SELL | $500K+ | 10K | $75.04 | Jun 13, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | SELL | $1M+ | 32K | $75.03 | Jun 13, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | EXERCISE | $100K–$500K | 16K | $14.39 | Jun 13, 2023 |
| Mansharamani Leena | SVP | SELL | $100K–$500K | 2K | $69.65 | Jun 7, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | SELL | $500K+ | 13K | $69.30 | Jun 7, 2023 |
| Kozanian Panos | EVP | SELL | $1M+ | 17K | $69.49 | Jun 7, 2023 |
| ZWARENSTEIN BARRY | CFO | SELL | $1M+ | 20K | $69.67 | Jun 6, 2023 |
| ZWARENSTEIN BARRY | CFO | SELL | $100K–$500K | 5K | $62.55 | May 22, 2023 |
| ZWARENSTEIN BARRY | CFO | SELL | $100K–$500K | 3K | $55.02 | May 18, 2023 |
| ZWARENSTEIN BARRY | CFO | SELL | $500K+ | 10K | $71.23 | Apr 19, 2023 |
| ZWARENSTEIN BARRY | CFO | SELL | $100K–$500K | 5K | $67.57 | Mar 31, 2023 |
| Kozanian Panos | EVP | SELL | $50K–$100K | 2K | $62.44 | Mar 17, 2023 |
| ZWARENSTEIN BARRY | CFO | SELL | $100K–$500K | 5K | $61.84 | Mar 17, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | SELL | $500K+ | 9K | $68.11 | Mar 8, 2023 |
| Mansharamani Leena | SVP | SELL | $50K–$100K | 1K | $67.65 | Mar 8, 2023 |
| Kozanian Panos | EVP | SELL | $100K–$500K | 2K | $68.61 | Mar 8, 2023 |
| ZWARENSTEIN BARRY | CFO | SELL | $100K–$500K | 2K | $68.70 | Mar 8, 2023 |
| ZWARENSTEIN BARRY | CFO | GRANT | N/A | 36K | — | Mar 1, 2023 |
| ZWARENSTEIN BARRY | CFO | SELL | $15K–$50K | 497 | $68.05 | Mar 1, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | SELL | $15K–$50K | 547 | $68.02 | Mar 1, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | GRANT | N/A | 39K | — | Mar 1, 2023 |
| Alexy Kimberly | Director | SELL | $100K–$500K | 3K | $85.35 | Feb 3, 2023 |
| Alexy Kimberly | Director | EXERCISE | $15K–$50K | 3K | $8.48 | Feb 3, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | SELL | $500K+ | 8K | $79.29 | Feb 3, 2023 |
| Alexy Kimberly | Director | SELL | $500K+ | 8K | $75.00 | Jan 25, 2023 |
| Alexy Kimberly | Director | EXERCISE | $50K–$100K | 8K | $8.48 | Jan 25, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | SELL | $1M+ | 43K | $75.06 | Jan 25, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | EXERCISE | $100K–$500K | 19K | $9.48 | Jan 25, 2023 |
| ACOSTA JACK L | Director | SELL | $100K–$500K | 5K | $70.70 | Jan 12, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | SELL | $1M+ | 43K | $68.72 | Jan 5, 2023 |
| Burkland Daniel P. | Pres. & Chief Reve… | EXERCISE | $100K–$500K | 43K | $5.53 | Jan 5, 2023 |
| Kozanian Panos | EVP | SELL | $100K–$500K | 2K | $68.61 | Dec 13, 2022 |
| ACOSTA JACK L | Director | SELL | $100K–$500K | 5K | $68.71 | Dec 13, 2022 |
| Mansharamani Leena | SVP | SELL | $15K–$50K | 395 | $65.53 | Dec 8, 2022 |
| ZWARENSTEIN BARRY | CFO | SELL | $100K–$500K | 3K | $66.22 | Dec 7, 2022 |
| Kozanian Panos | EVP | SELL | $100K–$500K | 3K | $65.72 | Dec 7, 2022 |
| Burkland Daniel P. | Pres. & Chief Reve… | SELL | $500K+ | 9K | $66.20 | Dec 7, 2022 |
| Mansharamani Leena | SVP | GRANT | N/A | 2K | — | Dec 6, 2022 |
| Mansharamani Leena | SVP | SELL | $50K–$100K | 1K | $65.49 | Dec 6, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 221 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| VANGUARD GROUP INC | 9.3M | $1M+ | SH |
| Pictet Asset Management Holding SA | 6.0M | $1M+ | SH |
| Voss Capital, LP | 5.9M | $1M+ | SH |
| Van Berkom & Associates Inc. | 3.6M | $1M+ | SH |
| STATE STREET CORP | 2.0M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.7M | $1M+ | SH |
| FIRST TRUST ADVISORS LP | 1.6M | $1M+ | SH |
| LOOMIS SAYLES & CO L P | 825K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 821K | $1M+ | SH |
| Assenagon Asset Management S.A. | 712K | $1M+ | SH |
| Point72 Asset Management, L.P. | 702K | $1M+ | SH |
| BARCLAYS PLC | 667K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 651K | $1M+ | SH |
| GAGNON SECURITIES LLC | 626K | $1M+ | SH |
| Legion Partners Asset Management, LLC | 592K | $1M+ | SH |
| BlackRock, Inc. | 509K | $1M+ | SH |
| TUDOR INVESTMENT CORP ET AL | 492K | $1M+ | SH |
| Bridgewater Associates, LP | 458K | $1M+ | SH |
| S Squared Technology, LLC | 430K | $1M+ | SH |
| First Eagle Investment Management, LLC | 363K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13D/A · Feb 27, 2026
3.8%
2.9M shares
SC 13D/A · Feb 17, 2026
7.4%
0 shares
SC 13G/A · Feb 13, 2026
1.3%
1.1M shares
SC 13G/A · Feb 5, 2026
0.9%
692K shares
SC 13G/A · Nov 5, 2025
5.1%
3.9M shares
SC 13G · Aug 13, 2025
1.3%
1.0M shares
SC 13D/A · Aug 11, 2025
8.5%
6.6M shares
SC 13D/A · Aug 7, 2025
0.0%
0 shares
SC 13G/A · Jul 18, 2025
7.8%
6.0M shares
SC 13G/A · May 12, 2025
7.9%
6.0M shares
SC 13G/A · Apr 17, 2025
5.5%
4.2M shares
SC 13D/A · Apr 15, 2025
7.3%
5.5M shares
SC 13D · Apr 15, 2025
7.3%
5.5M shares
Alyeska Investment Group, L.P.
SC 13G/A · Feb 14, 2025
4.2%
3.2M shares
SC 13G/A · Feb 12, 2025
12.1%
9.1M shares
SC 13G · Feb 11, 2025
8.8%
6.6M shares
SC 13G/A · Feb 5, 2025
6.5%
4.9M shares
SC 13G · Nov 21, 2024
9.1%
6.8M shares
Alyeska Investment Group, L.P.
SC 13G · Nov 14, 2024
5.9%
4.4M shares
SC 13G/A · Nov 12, 2024
12.1%
9.0M shares
SC 13G/A · Nov 12, 2024
15.0%
11.2M shares
SC 13G/A · Nov 4, 2024
12.1%
9.0M shares
SC 13G/A · May 10, 2024
10.8%
7.9M shares
SC 13G/A · Feb 14, 2024
3.7%
2.7M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
10.0%
7.3M shares
SC 13G/A · Jan 31, 2024
5.4%
3.9M shares
SC 13G · Jan 31, 2024
6.2%
4.5M shares
SC 13G · Jan 31, 2024
6.2%
4.5M shares
The Vanguard Group - 23-1945930
SC 13G/A · Oct 10, 2023
10.0%
7.2M shares
SC 13G · Oct 6, 2023
5.1%
3.6M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2023
0.2%
156K shares
SC 13G/A · Jan 24, 2023
9.5%
6.7M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2022
5.1%
3.5M shares