Summary
Updated Aug 30, 2026
Ian A. Johnston is Chief Financial Officer of Amrize Ltd (AMRZ). 4 SEC Form 4 filings on record going back to 2025, most recently on 11 March 2026. Most recent open-market trade: bought $250K of AMRZ on 11 March 2026. Lifetime open-market purchases: $828K. Historical track record: 5/5 stars across 15 tracked purchases.
Recent Transactions
17Every recent SEC Form 4 transaction Ian A. Johnston has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★★★ (5/5) |
| Total purchases tracked | 15 |
| Purchases with forward-return data | 15 |
| 30-day win rate | 80% |
| 90-day win rate | 80% |
| Avg 5-day return | +6.62% |
| Avg 30-day return | +10.41% |
| Avg 90-day return | -0.41% |
| Best 30-day return | +15.52% |
Trading Pattern
InsiderAlpha's records for Ian A. Johnston go back to 2025: 4 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $55K (15 buys totaling $828K). The largest single buy on record is $256K of AMRZ in 2025. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Ian A. Johnston files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Jan Philipp Jenisch - $11.63M of AMRZ open-market activity in the last 12 months
- Roald Brouwer - $637K of AMRZ open-market activity in the last 12 months
- Jaime Hill - $569K of AMRZ open-market activity in the last 12 months
- Mario Gross - $539K of AMRZ open-market activity in the last 12 months
- Baris Oran - $284K of AMRZ open-market activity in the last 12 months
- Stephen S. Clark - $249K of AMRZ open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Ian A. Johnston?
Ian A. Johnston is a corporate insider, tracked as Chief Financial Officer of Amrize Ltd (AMRZ). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Ian A. Johnston last file a Form 4?
The most recent primary Form 4 on record is dated 11 March 2026, one of 4 filings going back to 2025.
Has Ian A. Johnston been buying or selling stock?
Recorded transactions: 15 open-market purchases ($828K) and 0 open-market sales across all tracked filings.
How accurate is Ian A. Johnston's historical track record?
Across 15 tracked purchases, Ian A. Johnston averaged +10.4% avg 30-day return with a 80% 30-day win rate. InsiderAlpha rates the track record at 5/5 stars.
Where can I see all of Ian A. Johnston's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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