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
Jun 10, 2025 Buy	Stock Option (Right to Buy) A-Award	Moulder Leon O Jr See Remarks	Officer	400 000 Value: $4.78M
Jun 10, 2025 Buy	Stock Option (Right to Buy) A-Award	Farmer Joseph L See Remarks	Officer	175 000 Value: $2.09M
Jun 10, 2025 Buy	Stock Option (Right to Buy) A-Award	Fairmount Funds Management Llc Director	Director	18 500 Value: $220.9K
Jun 10, 2025 Buy	Stock Option (Right to Buy) A-Award	Enright Patrick G Director	Director	18 500 Value: $220.9K
Jun 10, 2025 Buy	Stock Option (Right to Buy) A-Award	Orloff John J Director	Director	18 500 Value: $220.9K
Jun 10, 2025 Buy	Stock Option (Right to Buy) A-Award	Lu Hongbo Director	Director	18 500 Value: $220.9K
Jun 10, 2025 Buy	Stock Option (Right to Buy) A-Award	Moulder Leon O Jr See Remarks	Officer	400 000 Value: $4.78M
Apr 15, 2025 Buy	Stock Option (Right to Buy) A-Award	Von Moltke Lisa See Remarks	Officer	400 000 Value: $3.49M
Apr 15, 2025 Buy	Stock Option (Right to Buy) A-Award	Von Moltke Lisa See Remarks	Officer	400 000 Value: $3.49M
Mar 17, 2025 Buy	Common Stock J-Other	Von Moltke Lisa Officer	Officer	0 Value: $0
Mar 17, 2025 Buy	Common Stock J-Other	Von Moltke Lisa Officer	Officer	0 Value: $0
Feb 18, 2025 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	25 000 Value: $166.8K
Feb 18, 2025 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	25 000 Value: $166.8K
Feb 07, 2025 Buy	Common Stock P-Purchase	Xiao Ting Director	Director	10 000 Value: $77.6K
Feb 07, 2025 Buy	Common Stock P-Purchase	Xiao Ting Director	Director	10 000 Value: $77.6K
Feb 07, 2025 Buy	Common Stock P-Purchase	Xiao Ting Director	Director	10 000 Value: $77.6K
Feb 07, 2025 Buy	Common Stock P-Purchase	Xiao Ting Director	Director	10 000 Value: $77.6K
Dec 16, 2024 Buy	Stock Option (Right to Buy) A-Award	Oliveira Orlando Chief Commercial Officer	Officer	7 775 Value: $68.2K
Dec 16, 2024 Buy	Stock Option (Right to Buy) A-Award	Fox Jennifer A. See Remarks	Officer	8 125 Value: $71.3K
Dec 16, 2024 Buy	Stock Option (Right to Buy) A-Award	Fox Jennifer A. See Remarks	Officer	8 125 Value: $71.3K
Dec 16, 2024 Buy	Stock Option (Right to Buy) A-Award	Oliveira Orlando Chief Commercial Officer	Officer	7 775 Value: $68.2K
Dec 04, 2024 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	45 000 Value: $449.1K
Dec 04, 2024 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	45 000 Value: $449.1K
Dec 03, 2024 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	25 000 Value: $269.0K
Dec 03, 2024 Buy	Common Stock P-Purchase	Moulder Leon O Jr Chief Executive Officer	CEO / President	25 000 Value: $269.0K

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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