undamentalytics Newsletter

Cosset Yael: insider trades

Officer at Kroger. No open-market purchases and 13 sales not made under a pre-set plan, reported from December 21, 2021 to July 15, 2026.

What happened after Cosset Yael’s sales?

After their sales, the shares moved −9.0% against the index over 12 months on average (a negative figure means selling was the right call); 92% trailed it.

With 296 insiders tested, some will look skilled or unskilled by chance alone: when we replaced each insider’s stocks with random companies bought on the same days, about 5.7 cleared the bar ahead and 23.3 behind. One record on its own proves little.

Trade by trade

Cosset Yael: trades against the S&P 500 afterwards
MeasuredTrades countedAverage vs S&P 500MedianWent the right wayYearst-statisticp-valueEvidence
Purchases, 3 months after the report 0 — — — — — — Not enough years
Purchases, 6 months after the report 0 — — — — — — Not enough years
Purchases, 12 months after the report 0 — — — — — — Not enough years
Purchases, 12 months after the trade 0 — — — — — — Not enough years
Sales, 3 months after the report 13 −0.5% −5.1% 62% 6 0.66 0.54 No reliable evidence
Sales, 12 months after the report 12 −9.0% −6.6% 92% 5 −0.55 0.61 No reliable evidence
Sales, 12 months after the trade 12 −11.6% −9.0% 92% 5 −0.95 0.39 No reliable evidence

“Average vs S&P 500” is the stock’s return including dividends minus the index’s over the same dates, from the close on the first trading day after the report, or from the close on the trade date. Only windows that have finished are counted. For sales, a negative figure means the stock lagged after it was sold, so selling was the right call (green). “Went the right way” is the share of purchases that beat the index, or of sales that trailed it. The t-statistic uses one average per year of reports, because one person’s trades bunch into the same stock and weeks, and needs trades in at least four different years; the p-value comes from the t distribution with that number of years (with four years, a t of 2 has p = 0.14). “Some evidence” means p under 5%, “strong evidence” p under 1% over at least six years.

Companies traded

CompanyTitle on the latest filingPurchasesSalesFirst reportLatest report
Kroger KR Executive Vice President013December 21, 2021July 15, 2026

Trades and what followed

Moves are against the S&P 500; green means the trade went the insider’s way.

ReportedTradedCompanyTradeValue3 months after report12 months after report12 months after trade
July 15, 2026July 14, 2026 KR Sale $1,764,000 +5.6%not yetnot yet
June 24, 2025June 23, 2025 KR Sale $5,234,252 −18.0%−39.8%−42.9%
April 24, 2025April 22, 2025 KR Sale $2,190,000 −16.5%−33.2%−39.3%
March 18, 2025March 17, 2025 KR Sale $1,170,570 −5.1%−1.9%−5.4%
March 17, 2025March 14, 2025 KR Sale $691,243 −6.4%−4.9%−4.4%
March 11, 2025March 10, 2025 KR Sale $7,839,605 −8.0%−1.2%−13.3%
December 10, 2024December 10, 2024 KR Sale $1,167,800 +15.1%−9.2%−8.3%
December 9, 2024December 9, 2024 KR Sale $1,756,200 +14.0%−8.3%−5.5%
April 3, 2023March 30, 2023 KR Sale $1,470,600 −11.9%−10.0%−9.6%
April 8, 2022April 7, 2022 KR Sale $2,071,314 −7.1%−16.4%−11.1%
March 21, 2022March 17, 2022 KR Sale $2,464,208 +0.4%−1.4%−4.2%
March 8, 2022March 7, 2022 KR Sale $2,229,518 −3.6%−4.9%−12.9%
December 21, 2021December 17, 2021 KR Sale $923,400 +34.4%+23.3%+17.1%

Open-market purchases and sales of at least $10,000 in companies we cover, from SEC Form 4 filings; sales made under a pre-set Rule 10b5-1 plan are not shown. “Not yet” means the window has not finished or the share price was under $5 at entry. These are the shares’ moves after each trade: they say nothing about why Cosset Yael traded and do not suggest the use of non-public information. How every insider compares · the insider trading backtest.