Haiyan Song is EVP of Security at F5, INC. (FFIV). They have made 1 open-market trade across 1 company since 2026, most recently 2026-09-14.
CIK 0001804708
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $59K since 2026, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| FFIV | 7,279 | $3.2M |
| CSGS | 22,560 | $1.8M |
| EOSE | 15,000 | $27K |
| Total | $5.1M |
Shares reported on the most recent Form 4, priced at the 2026-09-15 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| EOSE | BUY | 2026-09-11 | 2026-09-15 | $3.91 | $59K | -23.3% | -47.3% | — |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.