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.
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Disclosed Exposure
$22.02M
Companies
7
Total Filings
27
Lifetime Open-Market Net
$20.51M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| NUVB | Director | — | $6.57 | — | $0 | 3 | 2026-05-26 |
| BYSI | 10%+ Owner | 1,841,297 | $1.16 | $2.14M | -$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 | $25.22 | $19.88M | $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 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| 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 |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
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.
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.