CMPX - Compass Therapeutics, Inc.

Insider Purchase by Anderman Jonathan (GC)

1 Month
After Trade
Before Trade

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Trade Summary

3 days ago, Anderman Jonathan, serving as GC at Compass Therapeutics, Inc. (CMPX), purchased 25,000 shares at $1.89 per share, for a total transaction value of $47,250.00. Following this transaction, Anderman Jonathan now holds 196,000 shares of CMPX.

This purchase represents a 15.00% increase in Anderman Jonathan's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Wednesday, April 29, 2026 and publicly disclosed via SEC Form 4 filing on Thursday, April 30, 2026, 1 day after the trade was made.

Compass Therapeutics, Inc. operates in the HEALTHCARE sector, specifically within the BIOTECHNOLOGY industry. Insider buying activity in this sector can provide valuable signals about industry trends and company-specific developments.

Anderman Jonathan

GC

Jonathan E. Anderman, JD, is Senior Vice President, General Counsel, and Corporate Secretary at Compass Therapeutics, Inc. (CMPX), a clinical-stage oncology-focused biopharmaceutical company developing antibody-based therapeutics.[[1]](https://in.marketscreener.com/insider/JONATHAN-ANDERMAN-A3KFEK/)[[2]](https://www.compasstherapeutics.com/about/)[[3]](https://theorg.com/org/compass-therapeutics/org-chart/jonathan-anderman) He joined the company in August 2021, overseeing legal, corporate governance, and compliance functions, and has recently engaged in insider trading, including purchasing 25,000 shares at $1.89 each and holding approximately 46,000 shares valued at $243,340 as of March 31, 2026.[[1]](https://in.marketscreener.com/insider/JONATHAN-ANDERMAN-A3KFEK/)[[7]](https://www.investing.com/news/insider-trading-news/compass-therapeutics-general-counsel-jonathan-anderman-buys-47250-in-stock-93CH-4651137)[[8]](https://insiderinsights.com/free/index.php?s=ticker&o=-1&a=&q=CMPX) Anderman brings extensive experience in healthcare and life sciences law. Prior to Compass, he served as Global Commercial Counsel at Biogen, Inc. (2020-2021) and Assistant General Counsel at Intarcia Therapeutics, Inc. (2018), advising on corporate transactions, commercialization, and compliance.[[1]](https://in.marketscreener.com/insider/JONATHAN-ANDERMAN-A3KFEK/)[[3]](https://theorg.com/org/compass-therapeutics/org-chart/jonathan-anderman) Earlier, he was a healthcare attorney at Holland & Knight, representing clients on regulatory and transactional matters.[[3]](https://theorg.com/org/compass-therapeutics/org-chart/jonathan-anderman) He earned his JD from Boston University School of Law and BA from The Pennsylvania State University.[[1]](https://in.marketscreener.com/insider/JONATHAN-ANDERMAN-A3KFEK/)[[3]](https://theorg.com/org/compass-therapeutics/org-chart/jonathan-anderman)

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Trade Price

$1.89

Quantity

25,000

Total Value

$47,250.00

Shares Owned

196,000

Trade Date

Wednesday, April 29, 2026

3 days ago

SEC Filing Date

Thursday, April 30, 2026

Filed 1 day after trade

HEALTHCAREBIOTECHNOLOGY

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