HCWB insider buying – HCW Biologics Inc.
42 insider purchases since 2016 worth $11.4M by 8 different insiders. Last 12 months: 5 purchases, $511,680. Most recent filing: 2026-07-31.
Small company Public float $6M (latest 10-K, SEC). Share prices of small companies usually swing much more than those of large ones, in both directions, and are easier to move with little trading.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| Wong Hing C CEO | $7.8M 9× · 907,473 sh | 2021-07-22 2026-07-29 | – | 125,845 shares as of 2026-07-31 | Holds - never sold |
| GARRETT SCOTT T Director | $1.5M 5× · 329,480 sh | 2021-07-22 2026-07-29 | – | 41,644 shares as of 2026-07-31 | Holds - never sold |
| Byam Rebecca CFO | $1.5M 18× · 503,893 sh | 2021-07-22 2026-05-22 | – | 57,245 shares as of 2026-05-27 | Holds - never sold |
| Flowers Lee Officer | $370,541 4× · 65,240 sh | 2021-07-22 2023-06-08 | – | 8,691 shares as of 2026-07-31 | Holds - never sold |
| Rhode Peter Officer | $100,000 1× · 12,500 sh | 2021-07-22 2021-07-22 | – | 77,500 shares as of 2023-12-11 | Holds - never sold |
| Winer Gary M Director | $60,008 1× · 2,308 sh | 2025-05-08 2025-05-08 | – | 4,075 shares as of 2025-05-20 | Holds - never sold |
| Greene Rick S. Director | $49,849 3× · 9,373 sh | 2021-08-25 2025-05-08 | – | 2,066 shares as of 2025-05-09 | Holds - never sold |
| Jiao Jin-an Officer | $24,200 1× · 10,000 sh | 2021-12-06 2021-12-06 | – | 45,141 shares as of 2022-06-02 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 5 | $511,680 | 3 | – | – |
| 2025 | 7 | $3.0M | 5 | – | – |
| 2023 | 9 | $389,806 | 2 | – | – |
| 2022 | 9 | $664,764 | 3 | – | – |
| 2021 | 12 | $6.8M | 7 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-31 | Wong Hing C | CEO | 23,210 | $2.59 | $60,114 | +22.6% | SEC |
| 2026-07-31 | GARRETT SCOTT T | Director | 7,736 | $2.59 | $20,036 | +22.8% | SEC |
| 2026-05-27 | Wong Hing C | CEO | 113,879 | $1.41 | $160,569 | +22.7% | SEC |
| 2026-05-27 | GARRETT SCOTT T | Director | 177,936 | $1.41 | $250,890 | +697.7% | SEC |
| 2026-05-27 | Byam Rebecca | CFO | 14,235 | $1.41 | $20,071 | +33.1% | SEC |
| 2025-05-20 | Wong Hing C | CEO | 8,054 | $7.45 | $60,002 | +1.6% | SEC |
| 2025-05-20 | GARRETT SCOTT T | Director | 13,423 | $7.45 | $100,001 | +111.1% | SEC |
| 2025-05-09 | Wong Hing C | CEO | 92,500 | $26.00 | $2.4M | +23.0% | SEC |
| 2025-05-09 | Winer Gary M | Director | 2,308 | $26.00 | $60,008 | +543.1% | SEC |
| 2025-05-09 | Greene Rick S. | Director | 962 | $26.00 | $25,012 | +87.1% | SEC |
| 2025-05-09 | GARRETT SCOTT T | Director | 5,385 | $26.00 | $140,010 | +80.4% | SEC |
| 2025-05-09 | Byam Rebecca | CFO | 8,462 | $26.00 | $220,012 | +24.5% | SEC |
| 2023-09-15 | Byam Rebecca | CFO | 5,000 | $2.10 | $10,500 | +0.9% | SEC |
| 2023-09-13 | Byam Rebecca | CFO | 10,000 | $2.07 | $20,700 | +1.8% | SEC |
| 2023-09-08 | Byam Rebecca | CFO | 10,000 | $1.99 | $19,850 | +1.8% | SEC |
| 2023-06-09 | Byam Rebecca | CFO | 20,000 | $2.06 | $41,200 | +3.8% | SEC |
| 2023-06-09 | Flowers Lee | Officer | 10,000 | $2.16 | $21,600 | +9.9% | SEC |
| 2023-06-08 | Byam Rebecca | CFO | 24,696 | $2.06 | $50,978 | +4.9% | SEC |
| 2023-06-07 | Byam Rebecca | CFO | 39,062 | $1.74 | $68,093 | +8.5% | SEC |
| 2023-05-31 | Byam Rebecca | CFO | 40,000 | $1.64 | $65,600 | +9.5% | SEC |
| 2023-05-24 | Byam Rebecca | CFO | 58,486 | $1.56 | $91,285 | +16.2% | SEC |
| 2022-09-15 | Byam Rebecca | CFO | 15,000 | $2.58 | $38,700 | +4.8% | SEC |
| 2022-09-14 | Byam Rebecca | CFO | 30,000 | $2.62 | $78,450 | +10.6% | SEC |
| 2022-09-12 | Wong Hing C | CEO | 10,000 | $2.69 | $26,880 | +0.1% | SEC |
| 2022-09-07 | Wong Hing C | CEO | 10,000 | $2.57 | $25,680 | +0.1% | SEC |
| 2022-09-01 | Byam Rebecca | CFO | 17,200 | $2.56 | $43,960 | +6.5% | SEC |
| 2022-08-30 | Byam Rebecca | CFO | 20,000 | $2.56 | $51,100 | +8.1% | SEC |
| 2022-08-26 | Byam Rebecca | CFO | 90,300 | $2.54 | $229,377 | +58.1% | SEC |
| 2022-06-15 | Byam Rebecca | CFO | 66,452 | $2.42 | $160,585 | +74.7% | SEC |
| 2022-06-06 | Greene Rick S. | Director | 4,800 | $2.09 | $10,032 | +132.9% | SEC |
| 2021-12-07 | Jiao Jin-an | Officer | 10,000 | $2.42 | $24,200 | +48.6% | SEC |
| 2021-09-02 | Wong Hing C | CEO | 3,830 | $3.93 | $15,052 | +0.0% | SEC |
| 2021-08-30 | Wong Hing C | CEO | 18,500 | $3.85 | $71,160 | +0.1% | SEC |
| 2021-08-27 | Greene Rick S. | Director | 3,611 | $4.10 | $14,805 | SEC | |
| 2021-08-24 | Flowers Lee | Officer | 13,458 | $4.03 | $54,180 | +17.2% | SEC |
| 2021-08-23 | Flowers Lee | Officer | 10,532 | $4.25 | $44,761 | +15.6% | SEC |
| 2021-08-23 | Byam Rebecca | CFO | 10,000 | $4.40 | $44,000 | +19.2% | SEC |
| 2021-07-23 | Wong Hing C | CEO | 627,500 | $8.00 | $5.0M | +4.3% | SEC |
| 2021-07-23 | Rhode Peter | Officer | 12,500 | $8.00 | $100,000 | +36.5% | SEC |
| 2021-07-23 | GARRETT SCOTT T | Director | 125,000 | $8.00 | $1.0M | SEC |
Showing the latest 40 of 42 purchases.
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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