Who
Haiyan Song
Director
Company insider
Files Form 4 as: Director, Eos Energy Enterprises; Director, CSG Systems International; EVP of Security, F5.
In numbers
- Trades disclosed
- 38
- Buys
- 2
- Sells
- 0
- Bought
- $117K
- Sold
- $0
- Companies
- 3
- Companies where not an officer
- 2
- First trade
- 10 Sep 2020
- Last trade
- 14 Sep 2026
- Last filed
- 15 Sep 2026
Companies traded
Activity over time
1 Sep – 1 Oct
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 14 Sep 2026filed 15 Sep 2026 | EOSE Eos Energy EnterprisesElectronic Components & EMS | SEC FORM 4 Bought | $19K5,000 at $3.84 | filing |
| 14 Sep 2026filed 15 Sep 2026 | EOSE Eos Energy EnterprisesElectronic Components & EMS | SEC FORM 4 Bought | $19K5,000 at $3.84 | filing |
| 11 Sep 2026filed 15 Sep 2026 | EOSE Eos Energy EnterprisesElectronic Components & EMS | SEC FORM 4 Bought | $40K10,000 at $3.95 | filing |
| 11 Sep 2026filed 15 Sep 2026 | EOSE Eos Energy EnterprisesElectronic Components & EMS | SEC FORM 4 Bought | $40K10,000 at $3.95 | filing |
| 13 Jul 2026filed 15 Jul 2026 | EOSE Eos Energy Enterprisesoption or derivative · Electronic Components & EMS | SEC FORM 4 Code A | —29,980 at $0.00 | filing |
| 13 Jul 2026filed 15 Jul 2026 | EOSE Eos Energy Enterprisesoption or derivative · Electronic Components & EMS | SEC FORM 4 Code A | —29,980 at $0.00 | filing |
| 14 May 2026filed 18 May 2026 | CSG Systems InternationalPayments & Processors | SEC FORM 4 Code D | $1.8M22,560 at $80.70 | filing |
| 14 May 2026filed 18 May 2026 | Csg Systems International | SEC FORM 4 Code D | $1.8M22,560 at $80.70 | filing |
| 10 Jun 2025filed 11 Jun 2025 | Csg Systems International | SEC FORM 4 Code A | —3,085 at $0.00 | filing |
| 10 Jun 2024filed 11 Jun 2024 | Csg Systems International | SEC FORM 4 Code A | —4,723 at $0.00 | filing |
| 10 Jun 2023filed 12 Jun 2023 | Csg Systems International | SEC FORM 4 Code A | —4,060 at $0.00 | filing |
| 1 Feb 2023filed 3 Feb 2023 | FFIV F5option or derivative · Software | SEC FORM 4 Code M | —1,114 at $0.00 | filing |
| 1 Feb 2023filed 3 Feb 2023 | FFIV F5option or derivative · Software | SEC FORM 4 Code M | —445 at $0.00 | filing |
| 1 Feb 2023filed 3 Feb 2023 | FFIV F5Software | SEC FORM 4 Code M | —1,559 at $0.00 | filing |
| 1 Feb 2023filed 3 Feb 2023 | FFIV F5Software | SEC FORM 4 Code F | —819 at $0.00 | filing |
| 1 Nov 2022filed 3 Nov 2022 | FFIV F5option or derivative · Software | SEC FORM 4 Code M | —1,114 at $0.00 | filing |
| 1 Nov 2022filed 3 Nov 2022 | FFIV F5option or derivative · Software | SEC FORM 4 Code M | —446 at $0.00 | filing |
| 1 Nov 2022filed 3 Nov 2022 | FFIV F5Software | SEC FORM 4 Code M | —1,560 at $0.00 | filing |
| 1 Nov 2022filed 3 Nov 2022 | FFIV F5Software | SEC FORM 4 Code F | —1,446 at $0.00 | filing |
| 31 Oct 2022filed 2 Nov 2022 | FFIV F5Software | SEC FORM 4 Code A | —1,359 at $0.00 | filing |
News
Eos Energy Enterprises vs. Plug Power: Which Energy Storage Pioneer Is a Better Buy in 2026?EOSE · fool.com · 12 Oct 2026Eos Energy Enterprises (NASDAQ:EOSE) Upgraded to Hold at TD CowenEOSE · dailypolitical.com · 6 Oct 2026
0 headlines in the last 90 days name Haiyan Song; 2 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.