Xiangmin Cui
CIK 1487815 · last filed 2026-05-26
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
ALPN price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
TAI'AN CITY
SHANDONG
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| NUVB | Director | — | $4.51 | — | $0 | 3 | 2026-05-26 |
| BYSI | 10%+ Owner | 1,841,297 | $0.46 | $847.0K | -$996.0K | 4 | 2025-10-02 |
| Nuvation Bio Inc. (NUVB.WS) Delisted | Director | 7,611,031 | $0.01 | $38.8K | $2.32M | 4 | 2024-09-05 |
| ALPINE IMMUNE SCIENCES, INC. (ALPN) Delisted | Director | 6,582,380 | $64.97 | $427.66M | $19.19M | 10 | 2024-01-22 |
| HLTH | Director | 788,441 | $27.92 | $22.01M | $0 | 1 | 2021-09-30 |
| ARMO BioSciences, Inc. (ARMO) Delisted | Director | 0 | — | — | $0 | 3 | 2018-06-22 |
| China Biologic Products, Inc. (CBPO) Delisted | Director | — | $119.99 | — | $0 | 2 | 2011-01-28 |
Recent Filings · Page 2 of 3
27 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-04-11 | Nuvation Bio Inc. (NUVB.WS) Delisted | Grant (A) | +6,172,344 | $0 | EDGAR |
| 2024-01-22 | ALPINE IMMUNE SCIENCES, INC. (ALPN) Delisted | Exer (X) | +1,234,636 | $15.73M | EDGAR |
| 2024-01-04 | ALPINE IMMUNE SCIENCES, INC. (ALPN) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-11-14 | ALPINE IMMUNE SCIENCES, INC. (ALPN) Delisted | Buy (P) | +375,000 | $4.69M | EDGAR |
| 2023-01-05 | ALPINE IMMUNE SCIENCES, INC. (ALPN) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-09-27 | ALPINE IMMUNE SCIENCES, INC. (ALPN) Delisted | Grant (A) | +2,000,000 | $14.70M | EDGAR |
| 2022-01-04 | ALPINE IMMUNE SCIENCES, INC. (ALPN) Delisted | Grant (A) | — | $0 | EDGAR |
| 2021-09-30 | HLTH | Mixed | +8,980,909 | $10.09M | EDGAR |
| 2021-09-21 | ALPINE IMMUNE SCIENCES, INC. (ALPN) Delisted | Buy (P) | +1,542,553 | $14.50M | EDGAR |
| 2021-01-05 | ALPINE IMMUNE SCIENCES, INC. (ALPN) Delisted | Grant (A) | — | $0 | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.