NASDAQ:ZBIO

Zenas Biopharma Stock Insider Trading

*Your capital is at risk

$17.40

+0.270 (+1.58%)

At Close: Jun 03, 2026

Zenas BioPharma Stock Insider Power

Based on the 81 latest insides trades, we have calculated the insider power to be positive at 100.00. In total, the insiders bought 5.56M and sold 0 ZBIO shares in the last 81 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 81 transactions)	100.00
● Buy	5.56M shares
● Sell	0 shares
100% Buy Activity Negligible or No Correlation
No Significant Signals No statistically significant buy or sell signals detected in recent insider data.

Historical Insider Trades

Date	Type	Person	Role	Amount
May 18, 2026 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	60 000 Value: $1.01M
Apr 29, 2026 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	35 000 Value: $616.7K
Apr 28, 2026 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	25 000 Value: $450.5K
Mar 31, 2026 Buy	Common Stock P-Purchase	Lu Hongbo Director	Director	3 768 Value: $70.2K
Mar 31, 2026 Buy	Common Stock P-Purchase	Fairmount Funds Management Llc Director	Director	150 000 Value: $3.00M
Mar 31, 2026 Buy	Common Stock P-Purchase	Lu Hongbo Director	Director	75 000 Value: $1.50M
Mar 31, 2026 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	34 000 Value: $656.5K
Mar 30, 2026 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	20 000 Value: $364.6K
Feb 13, 2026 Buy	Common Stock P-Purchase	Allen Patricia L Director	Director	4 160 Value: $109.7K
Feb 12, 2026 Buy	Common Stock P-Purchase	Allen Patricia L Director	Director	5 000 Value: $118.9K
Feb 12, 2026 Buy	Common Stock P-Purchase	Allen Patricia L Director	Director	5 700 Value: $138.7K
Feb 12, 2026 Buy	Common Stock P-Purchase	Allen Patricia L Director	Director	5 000 Value: $132.5K
Feb 11, 2026 Buy	Common Stock P-Purchase	Lu Hongbo Director	Director	25 985 Value: $584.7K
Feb 02, 2026 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	57 000 Value: $1.02M
Jan 09, 2026 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	20 000 Value: $331.0K
Jan 08, 2026 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	30 000 Value: $489.0K
Jan 07, 2026 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	50 000 Value: $819.0K
Oct 09, 2025 Buy	Common Stock P-Purchase	Enright Patrick G Director	Director	11 990 Value: $250.0K
Oct 09, 2025 Buy	Common Stock P-Purchase	Enright Patrick G Director	Director	105 265 Value: $2.00M
Oct 09, 2025 Buy	Common Stock P-Purchase	Sr One Capital Management, Llc 10 Percent Owner	10% Owner	63 158 Value: $1.20M
Oct 09, 2025 Buy	Common Stock P-Purchase	Sr One Capital Management, Llc 10 Percent Owner	10% Owner	63 157 Value: $1.20M
Oct 09, 2025 Buy	Common Stock P-Purchase	Nunn Jason Raleigh Director	Director	63 158 Value: $1.20M
Oct 09, 2025 Buy	Common Stock P-Purchase	Enright Patrick G Director	Director	11 990 Value: $250.0K
Oct 09, 2025 Buy	Common Stock P-Purchase	Enright Patrick G Director	Director	105 265 Value: $2.00M
Oct 09, 2025 Buy	Common Stock P-Purchase	Nunn Jason Raleigh Director	Director	63 158 Value: $1.20M

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT ZENAS BIOPHARMA, INC

The investment seeks daily investment results, before fees and expenses, that correspond to three times the inverse (-3x) of the daily performance of the NASDAQ Biotechnology Index®. The fund invests in derivatives that the advisor believes, should have similar daily return characteristics as three times the inverse of the daily return of the index. The index is a modified capitalization weighted index that includes securities of NASDAQ listed...

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