Insider Tracker SEC Form 4 insider trades
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ZTS

Zoetis Inc.

AI summary Multiple directors buy open-market shares following a post-earnings stock sell-off.

65
Insider Score Band 60–79
Research score
56
AI adjustment
+9

Research score, not a recommendation.

Total bought$886.4K3 Form 4 purchases
Distinct insiders3open-market buyers
Lead insiderDAMELIO FRANK ADirector
Cluster window2026-05-11 → 2026-05-13active

Market data

Live quote and chart from Yahoo Finance, loaded through this server. Insider purchases are marked on the chart.

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Why this score

Research score: a weighted blend of the five factors, times the routine and offering discounts, minus the selling penalty.

Breadth number & diversity of participating insiders
37%
Seniority executive rank of buyers (CEO/CFO/Director)
60%
Commitment purchase size relative to company & holdings
32%
Context buying into stock weakness signals conviction
100%
Timing coordinated purchases within a tight window
100%
Routine-purchase discount × 1.00
Company-type / offering discount × 1.00
Net insider selling penalty − 0

Why are they buying?

AI · discretionary · catalyst credible · documented

Insiders likely stepped in to purchase shares following a sharp 20% decline in Zoetis's stock price triggered by a weaker-than-expected Q1 earnings report and guidance cut.

Directors Michael McCallister, Paul Bisaro, and Frank DAmelio collectively acquired shares on the open market between May 11 and May 13, 2026, directly following the company's Q1 earnings release and 8-K filing on May 7, 2026.

Stock Price & Insider Purchase History

Daily close price with open-market insider purchases plotted over time

Loading price history…

Transactions

3 Form 4 trades · 3 insiders Sign in to download CSV
Purchases in this cluster, grouped by insider, largest first
Date Insider Role Shares Price Value Filing
2026-05-13 DAMELIO FRANK A history of DAMELIO FRANK A's purchases Director 6,650 $75.39 $501.3K SEC filing for DAMELIO FRANK A (opens in a new tab)
2026-05-11 MCCALLISTER MICHAEL B history of MCCALLISTER MICHAEL B's purchases Director 3,000 $77.76 $233.3K SEC filing for MCCALLISTER MICHAEL B (opens in a new tab)
2026-05-13 Bisaro Paul history of Bisaro Paul's purchases Director 2,000 $75.88 $151.8K SEC filing for Bisaro Paul (opens in a new tab)
Total $886.4K

What happened next

A run ends after a pause in the buying, so one company can have several. Returns are the stock's return minus its benchmark's (IWM for small companies, SPY otherwise), from the first open after the run became a cluster. Past results, not a forecast.

After this run became a cluster: 21 days +5.9%63 days -4.9%126 days –