Guillaume Stephen J — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

Guillaume Stephen J has filed 2 SEC Form 4 filings across 1 company in the last 90 days — buying. Lifetime open-market purchases: $4K. Historical track record: 2/5 stars across 3 tracked purchases.

Track Record

InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.

InsiderAlpha rating★★☆☆☆ (2/5)
Total purchases tracked3
Purchases with forward-return data3
30-day win rate6667%
90-day win rate3333%
Avg 5-day return+194.85%
Avg 30-day return-223.78%
Avg 90-day return-449.48%
Best 30-day return+161.51%

Recent Transactions

DateTickerCompanyCodeSharesPriceValue
2026-06-26CZFSCITIZENS FINANCIAL SERVICES INCA — Grant or award311$0.00
2026-06-02CZFSCITIZENS FINANCIAL SERVICES INCP — Open-market purchase34$61.78$2K
2026-03-02CZFSCITIZENS FINANCIAL SERVICES INCP — Open-market purchase13$57.06$742
2025-08-31CZFSCITIZENS FINANCIAL SERVICES INCP — Open-market purchase13$56.96$740
2024-12-02CZFSCITIZENS FINANCIAL SERVICES INCP — Open-market purchase13$67.08$872

Companies — Last 90 Days

Frequently Asked Questions

Who is Guillaume Stephen J?

Guillaume Stephen J is a corporate insider — currently tracked as EXECUTIVE VICE PRESIDENT of CITIZENS FINANCIAL SERVICES INC (CZFS). InsiderAlpha tracks every SEC Form 4 filing in real time.

How many SEC Form 4 filings has Guillaume Stephen J submitted recently?

2 primary Form 4 filings in the last 90 days, covering 1 company.

Has Guillaume Stephen J been buying or selling stock?

Recorded transactions: 4 open-market purchases ($4K) and 0 open-market sales () across all tracked filings.

How accurate is Guillaume Stephen J's historical track record?

Across 3 tracked purchases, Guillaume Stephen J averaged -223.8% avg 30-day return with a 6667% 30-day win rate. InsiderAlpha rates the track record at 2/5 stars.

Where can I see all of Guillaume Stephen J'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.

Learn More

Open the live Guillaume Stephen J profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.