MCK MCKESSON CORP
Price Chart
Executive Summary
Two C-suite insiders at McKesson sold $4.52M in open-market stock on May 26, 2026, at ~$761/share. While the CEO and CFO had routine non-cash derivative exercises and tax-withholding transactions on May 23, the open-market sales by the Chief Strategy Officer and Chief Legal Officer represent the first material cash sales in the cluster. At $90.7B market cap, the $4.52M is ~0.005% — far below the 0.1% proportionality threshold — and per the asymmetric insider-sale literature, cluster sales are not predictive even when multiple insiders sell. The activity is too small relative to company size to carry informational content, and the derivative exercises/tax withholdings are non-cash and routine.
Key Financial Metrics
Actionable Insight
Insider sales are well below the materiality threshold for a $90.7B company — no bearish signal. Monitor if this pattern scales (e.g., CEO/CFO begin open-market selling) but routine C-suite sales and derivative exercises are not actionable. No trade recommendation.
Key Facts
- Two EVPs sold a combined $4.52M in open-market stock on 2026-05-26 at ~$761/share.
- Total cluster sales are ~0.005% of McKesson's $90.7B market cap — trivial from a proportionality perspective.
- CEO Brian Tyler and CFO Britt Vitalone had only non-cash derivative exercises and tax-withholding dispositions on 2026-05-23; no open-market sales by top C-suite.
- Per academic literature, cluster insider sales are not predictive (Alldredge 2019) — many are liquidity-driven or vesting coincidences.
- McKesson has 87% analyst bullish rating (12 Buy, 8 Strong Buy) — no signs of fundamental distress.
Financial Impact
$4.52M in open-market sales at ~$761/share, ~0.005% of market cap
Risk Factors
- If insider selling accelerates in coming weeks (direction change), could signal leadership caution ahead of earnings.
- Historical calibration shows past neutral calls on MCK at T+20 averaged -5.4% — but those were unrelated filings; insider cluster patterns have not been tested on this ticker.
Market Snapshot
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-MCK-1779905685522 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
Jun 3, 2026
2d ago
|
Insider Cluster
| — | awaiting T+5 | — | — |
|
Jun 2, 2026
3d ago
|
Insider Cluster
| — | awaiting T+5 | — | — |
|
May 27, 2026
9d ago
|
Insider Cluster
| $756.13 $736.78 | ▼ −2.56% | ▼ −3.77% | $775.66 (+2.58%) |
|
May 27, 2026
9d ago
|
Insider Cluster
| — | awaiting T+5 | — | — |
|
May 7, 2026
29d ago
|
8-K
| $732.70 $747.23 | ▲ +1.98% | ▲ +0.52% | $775.66 (+5.86%) |
|
Apr 28, 2026
5w ago
|
8-K
| — | awaiting T+5 | — | — |
|
Apr 6, 2026
8w ago
|
8-K
| $856.36 $864.34 | ▲ +0.93% | ▼ −3.20% | $775.66 (−9.42%) |
|
Apr 1, 2026
9w ago
|
GOVT-CONTRACT
| — | awaiting T+5 | — | — |
|
Mar 5, 2026
13w ago
|
8-K
| $930.59 $943.53 | ▲ +1.39% | ▲ +3.63% | $775.66 (−16.65%) |
US Market Status
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