HL
Insider
Hongbo Lu
DirectorHongbo Lu (Director) filed 4 Form 4 reports in the trailing twelve months (3 purchases, 1 sale, 1 filed past the two-business-day deadline), most often in Zenas BioPharma, Inc. (ZBIO). Across 3 priced purchase filings, the average 21-session return was +1.6% from execution and +2.9% from disclosure (delay-adjusted; derived). The largest single filing was $1.5M of ZBIO (75,000 sh × $20.00, as filed), executed Mar 31.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
+1.6%
avg across 3 priced filings
Delay-adjustediThe same average, entered at disclosure dates
+2.9%
same 3 filings, from disclosure
Filings, ttm
4
3 buys · 1 sells · 1 late
Median delay
2d
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$8.3M
shares × price, as filed
Last traded
May 12
Filed May 14
Median ADV $181.7M across their filed names
Open performance→Volume by month
Buys $8.1M
Sells $228K
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Healthcare
3 filings
Sector per market data · by filing · past 12 months
Most traded names
ZBIORecent filings
ARWRSALE
Arrowhead Pharmaceuticals, Inc.
View filing →
$228K2,970 sh × $76.88
Exec May 12
Filed May 14 · 5:30 PM ET ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $1.5M
75,000 sh × $20.00
Exec Mar 31
Filed Mar 31 · 5:00 PM ET ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $585K
25,985 sh × $22.50
Exec Feb 11
Filed Feb 13 · 5:35 PM ET ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $6.0M
321,983 sh across 2 lots
Exec Sep 13 2024
Filed Oct 9 2025 · 3:37 PM ET † ZBIOPURCHASE Zenas BioPharma, Inc. View filing → $1000K
58,823 sh × $17.00
Exec Sep 13 2024
Filed Sep 17 2024 · 5:30 PM ET TERNPURCHASE Terns Pharmaceuticals, Inc. View filing → $5.0M
476,190 sh across 2 lots
Exec Sep 12 2024
Filed Sep 17 2024 · 5:30 PM ET †