NASDAQ:XOMAP

Xoma Stock Insider Trading

Healthcare > Biotechnology

Buy XOMAP

*Your capital is at risk

$25.51

+0.0496 (+0.195%)

At Close: Jun 03, 2026

Xoma Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at 0. In total, the insiders bought 2.67M and sold 0 XOMAP shares in the last 100 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 100 transactions)	0
● Buy	2.67M 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 15, 2023 Buy	Depositary Shares - 8.375% B Cumulative Stock P-Purchase	Sitko Bradley Chief Investment Officer	Officer	1 500 Value: $35.1K
May 15, 2023 Buy	Depositary Shares - 8.375% B Cumulative Stock P-Purchase	Sitko Bradley Chief Investment Officer	Officer	1 500 Value: $35.1K
May 12, 2023 Buy	Common Stock P-Purchase	Sitko Bradley Chief Investment Officer	Officer	1 957 Value: $37.2K
May 12, 2023 Buy	Common Stock P-Purchase	Sitko Bradley Chief Investment Officer	Officer	43 Value: $802
May 12, 2023 Buy	Common Stock P-Purchase	Sitko Bradley Chief Investment Officer	Officer	1 957 Value: $37.2K
May 12, 2023 Buy	Common Stock P-Purchase	Sitko Bradley Chief Investment Officer	Officer	43 Value: $802
Jan 06, 2023 Buy	Common Stock, $0.0075 par value per share P-Purchase	Bvf Partners L P/il Director	Director	1 676 Value: $36.8K
Jan 06, 2023 Buy	Common Stock, $0.0075 par value per share P-Purchase	Bvf Partners L P/il Director	Director	1 573 Value: $34.6K
Jan 06, 2023 Buy	Common Stock, $0.0075 par value per share P-Purchase	Bvf Partners L P/il Director	Director	1 676 Value: $36.8K
Jan 06, 2023 Buy	Common Stock, $0.0075 par value per share P-Purchase	Bvf Partners L P/il Director	Director	1 573 Value: $34.6K
Jan 05, 2023 Buy	Common Stock, $0.0075 par value per share P-Purchase	Bvf Partners L P/il Director	Director	3 330 Value: $61.2K
Jan 05, 2023 Buy	Common Stock, $0.0075 par value per share P-Purchase	Bvf Partners L P/il Director	Director	15 670 Value: $288.1K
Jan 05, 2023 Buy	Common Stock, $0.0075 par value per share P-Purchase	Bvf Partners L P/il Director	Director	3 330 Value: $61.2K
Jan 05, 2023 Buy	Common Stock, $0.0075 par value per share P-Purchase	Bvf Partners L P/il Director	Director	15 670 Value: $288.1K
Jan 03, 2023 Buy	Employee Stock Option (right to buy) A-Award	Sitko Bradley Chief Investment Officer	Officer	300 000 Value: $0
Jan 03, 2023 Buy	Employee Stock Option (right to buy) A-Award	Sitko Bradley Chief Investment Officer	Officer	250 000 Value: $0
Jan 03, 2023 Buy	Employee Stock Option (right to buy) A-Award	Sitko Bradley Chief Investment Officer	Officer	300 000 Value: $0
Jan 03, 2023 Buy	Employee Stock Option (right to buy) A-Award	Sitko Bradley Chief Investment Officer	Officer	250 000 Value: $0
Jan 03, 2023 Buy	Employee Stock Option (right to buy) A-Award	Hughes Owen Interim CEO	CEO / President	100 000 Value: $0
Jan 03, 2023 Buy	Employee Stock Option (right to buy) A-Award	Hughes Owen Interim CEO	CEO / President	75 000 Value: $0
Jan 03, 2023 Buy	Common Stock J-Other	Sitko Bradley Insider	Unknown	0 Value: $0
Jan 03, 2023 Buy	Employee Stock Option (right to buy) A-Award	Hughes Owen Interim CEO	CEO / President	100 000 Value: $0
Jan 03, 2023 Buy	Employee Stock Option (right to buy) A-Award	Hughes Owen Interim CEO	CEO / President	75 000 Value: $0
Jan 03, 2023 Buy	Common Stock J-Other	Sitko Bradley Insider	Unknown	0 Value: $0
Jan 01, 2023 Buy	Common Stock J-Other	Hughes Owen Insider	Unknown	0 Value: $0

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