Key points
- Tiziana Life Sciences (TLSA) carries a Very Strong Insider Score with $1.04M in insider purchases.
- BlossomHill Therapeutics (BLSM) has logged $25.2M in insider buying, the highest dollar volume in this cohort.
- Four of the five stocks are healthcare names; PNAQ (a SPAC) rounds out the group with $29.8M in insider purchases.
When insiders load up on their own stock, it often signals conviction—they're betting their own capital on fundamentals outsiders may not yet see. Our Insider Score feed ranks stocks by the quality and consistency of insider buying activity, factoring in transaction size, timing, frequency, and the seniority of the buyer. Here are the five stocks with the strongest Insider Scores today, where insiders have demonstrated measurable conviction through substantial open-market purchases.
1. Tiziana Life Sciences (TLSA) — A Very Strong Signal
TLSA carries a Very Strong Insider Score, the highest band in this ranking, with $1.04M in total insider purchases reflecting sustained conviction at the leadership level. The healthcare-focused biotech is seeing insiders put real capital to work, signaling confidence in the pipeline and strategic direction. Investors may want to monitor whether this buying continues as clinical or commercial milestones approach.
2. BlossomHill Therapeutics (BLSM) — Largest Dollar Volume
BLSM logs a Strong Insider Score with the highest absolute dollar volume in this cohort: $25.2M in insider purchases. This therapeutic-stage healthcare company has attracted significant insider capital, historically associated with belief in upcoming value inflection points. The scale of buying suggests insiders see material upside that may not yet be reflected in the current valuation.
3. FEMASYS Inc (FEMY) — Healthcare Focus, Emerging Signal
FEMY carries a Strong Insider Score despite a smaller absolute purchase volume of $134K, indicating that the quality and pattern of insider buying—not just size—matters in the scoring algorithm. This women's healthcare company is in an early-stage conviction phase; investors may want to track whether insider buying accelerates in coming quarters. Such patterns have historically preceded meaningful investor interest in similarly positioned healthcare plays.
4. Pinnacle Acquisition Corp (PNAQ) — SPAC with Heavy Inside Buying
PNAQ rounds out the list with a Strong Insider Score and $29.8M in insider purchases, the second-largest dollar volume here. As a blank-check company, SPAC insider buying often reflects founder/sponsor confidence in the target acquisition or pending merger terms. This level of insider commitment may suggest the deal thesis and management alignment are substantial enough to warrant investor attention.
5. MDxHealth SA (MDXH) — Diagnostic Play With Steady Conviction
MDXH holds a Strong Insider Score with $1M in insider purchases, reflecting consistent leadership confidence in the molecular diagnostics space. The healthcare-sector focus and insider buying pattern suggest insiders believe the company's pipeline and market positioning justify personal capital deployment. Investors may want to monitor quarterly results and clinical updates to gauge whether insider conviction continues.
The Bottom Line
A strong Insider Score reflects the conviction of company leaders and board members who have the most detailed view of operations, pipeline, and competitive positioning. These five stocks—led by TLSA's Very Strong ranking and anchored by BLSM and PNAQ's heavy dollar volumes—represent the current cream of insider-buying activity across healthcare and SPACs. For a real-time view of all ranked insider picks and their Insider Scores, visit our Insider Score rankings page.