Insider Trading March 10, 2026

Callan JMB CMO Purchases 14,805 Shares as Company Advances Manufacturing Agreement and Board Actions

Insider acquisition on March 6, 2026 coincides with new manufacturing oversight deal for Attune Biotech and routine governance votes at virtual annual meeting

By Priya Menon CJMB
Callan JMB CMO Purchases 14,805 Shares as Company Advances Manufacturing Agreement and Board Actions
CJMB

Callan JMB Inc. reported that Chief Medical Officer Croyle David J purchased 14,805 shares of common stock on March 6, 2026, at $1.762 per share for a total of $26,086. The transaction, filed on a Form 4 with the Securities and Exchange Commission, increased Croyle’s holdings to 789,805 shares and was executed indirectly through a Rollover IRA. The trade arrives while the stock is trading near a 52-week low of $1.08, having declined 62% over the past year. Separately, Callan JMB disclosed a strategic agreement to oversee manufacturing and deployment operations for Biostax Corp, doing business as Attune Biotech Inc., and reported the results of its virtual annual shareholder meeting, including director elections and the appointment of its independent registered public accounting firm.

Key Points

  • CMO Croyle David J purchased 14,805 shares on March 6, 2026 at $1.762 per share, totaling $26,086, raising his holdings to 789,805 shares; acquisition was effected indirectly through a Rollover IRA - impacts equity ownership and insider holdings reporting.
  • Callan JMB entered a strategic agreement to oversee manufacturing and deployment operations for Attune Biotech Inc., including responsibilities for BARDA contract compliance, FDA audit readiness, and coordination of Strategic National Stockpile deployment - impacts operations and regulatory compliance in the biotech/therapeutics supply chain.
  • At the company’s virtual annual meeting, shareholders elected five directors to one-year terms and approved Rosenberg Rich Baker Berman, P.A. as independent registered public accountants for the fiscal year ending December 31, 2025, with approximately 68.60% of outstanding shares represented - impacts governance and external audit oversight.

Callan JMB Inc. disclosed an insider purchase by Chief Medical Officer Croyle David J, who acquired 14,805 shares of the company’s common stock on March 6, 2026. The shares were purchased at $1.762 apiece, resulting in a total transaction value of $26,086. The transaction was reported on a Form 4 filing with the Securities and Exchange Commission and was executed indirectly through a Rollover IRA.

The purchase increased Croyle’s total holdings in Callan JMB to 789,805 shares. The trade occurs while the company’s shares are trading near a 52-week low of $1.08 and reflect a 62% decline in the stock price over the past year.

Market valuation context from InvestingPro included in the company disclosure indicates a Fair Value estimate of $2.19 for CJMB. The platform also notes it provides nine additional ProTips for investors seeking further analysis of the company.

In a separate operational development, Callan JMB announced a strategic agreement with Biostax Corp, which operates under the name Attune Biotech Inc. Under the terms disclosed, Callan JMB will oversee Attune’s manufacturing and deployment operations. The scope of that role includes ensuring compliance with federal standards such as BARDA contract compliance and FDA audit readiness, and coordinating Strategic National Stockpile deployment for Attune’s therapeutic pipeline.

Callan JMB also completed its virtual annual meeting of shareholders. At the meeting, shareholders elected five directors to serve one-year terms and approved the appointment of Rosenberg Rich Baker Berman, P.A. as the company’s independent registered public accounting firm for the fiscal year ending December 31, 2025. Approximately 68.60% of the outstanding shares entitled to vote were represented at the meeting, either virtually or by proxy.

These developments combine an insider equity purchase, an expanded operational role in manufacturing and deployment for a partner biotech, and routine governance actions. Collectively, the items reflect activity on multiple fronts for Callan JMB as it manages ownership changes, compliance responsibilities tied to federal programs, and standard corporate governance matters.

Available information in the filings and company disclosures establishes the transactions and corporate actions described here. Where additional detail is not provided in those disclosures, such limitations are noted and no further inference is made.

Risks

  • Market risk reflected by the company’s share price trading near a 52-week low of $1.08 and a 62% decline over the past year - relevant to equity investors and market participants.
  • Regulatory and compliance risk tied to Callan JMB’s role overseeing Attune Biotech’s manufacturing and deployment operations, which includes BARDA contract compliance and FDA audit readiness - relevant to manufacturing, healthcare, and federal procurement sectors.
  • Governance and representation uncertainty indicated by the annual meeting turnout (approximately 68.60% of outstanding shares represented), which determines the ratification of directors and auditor appointments and may affect corporate oversight.

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