InsiderSource

MENDELSON ERIC A

Director, Co-COB and Co-CEO, Co-President, Co- President · SEC CIK 1031083
Insider at HEI HEICO CORP

Buy track record

How this insider's open-market purchases have performed
100%
of buys now in profit
14 up · 0 down
Avg return since buy+445.3%
Median return+249.9%
Best trade+935.3%
Worst trade+10.6%
Buys scored14
Average return by holding period — separates good entry timing from riding one long winner
After 1 month +4.1% 64% won · 14 trades
After 3 months +5.2% 57% won · 14 trades
After 6 months +5.2% 50% won · 14 trades
After 12 months +20.4% 69% won · 13 trades
DateCompany90d trendBuy priceValue1M3M6M12MTo date
Oct 10, 2025 HEI $244 $164.9K +7.8% +16.3% −5.7% — +10.6%
Oct 18, 2024 HEI $263 $190.9K +3.4% −7.9% −9.0% +20.1% +30.2%
Jun 2, 2023 HEI $158 $19K +8.9% +3.2% +10.1% +37.5% +110.0%
Jan 10, 2023 HEI $157 $217.2K +10.0% +6.7% +11.2% +9.0% +116.1%
Sep 8, 2021 HEI $125 $104.2K +7.8% +16.3% +13.4% +24.5% +172.7%
Oct 12, 2020 HEI $111 $109K +13.1% +23.9% +19.3% +21.8% +208.2%
Oct 29, 2019 HEI $121 $114.5K +7.1% +1.5% −24.9% −12.9% +181.8%
Oct 9, 2018 HEI $88 $115.7K +0.7% −11.2% +12.3% +43.0% +291.6%
Sep 29, 2017 HEI $76 $114.4K +0.9% +5.1% +20.9% +60.9% +496.5%
Sep 7, 2016 HEI $57 $116.7K −2.5% +18.5% +24.6% +55.3% +875.4%
Sep 21, 2015 HEI $45 $69.8K +0.0% +0.0% +0.0% +5.5% +935.3%
Dec 18, 2014 HEI $47 $93.9K +0.0% +0.0% +0.0% +0.0% +935.3%
Dec 18, 2014 HEI $47 $26.1K +0.0% +0.0% +0.0% +0.0% +935.3%
Oct 29, 2013 HEI $39 $70.1K +0.0% +0.0% +0.0% +0.0% +935.3%
How this is calculated. We score only open-market purchases (SEC code P) — the buys that carry real signal. Each trade's return is measured from the adjusted closing price on the purchase date to the latest close, accounting for stock splits and dividends. The 1M/3M/6M/12M columns show the same trade's return after each fixed holding period; a dash means that horizon hasn't elapsed yet or isn't priceable. Sales are excluded because insiders sell for many routine reasons. With only 14 scored trades, treat this as a small sample, not a verdict.
Open-market buys
$1.53M
14 trades
Open-market sells
$33.41M
8 trades
Net flow
−$31.89M
Net selling
Total filings
57
transactions shown

Full transaction history

All Form 4 activity across every company, newest first
View on SEC EDGAR ↗
HEI
HEICO CORP
Option exercise MENDELSON ERIC A · Director, Co-COB and Co-CEO · Option exercise · Oct 31, 2025
+$3.6M
80,000 sh @ $45
HEI
HEICO CORP
Tax withholding MENDELSON ERIC A · Director, Co-COB and Co-CEO · Tax withholding · Oct 31, 2025
−$12.08M
38,004 sh @ $318
HEI
HEICO CORP
Buy MENDELSON ERIC A · Director, Co-COB and Co-CEO · Open-market purchase · Oct 10, 2025
+$164.9K
676 sh @ $244
HEI
HEICO CORP
Option exercise MENDELSON ERIC A · Director, Co-President · Option exercise · Oct 16, 2024
+$2.44M
97,656 sh @ $25
HEI
HEICO CORP
Tax withholding MENDELSON ERIC A · Director, Co-President · Tax withholding · Oct 16, 2024
−$11.52M
43,436 sh @ $265
HEI
HEICO CORP
Option exercise MENDELSON ERIC A · Director, Co-President · Option exercise · Jan 30, 2023
+$2.9M
97,656 sh @ $30
HEI
HEICO CORP
Tax withholding MENDELSON ERIC A · Director, Co-President · Tax withholding · Jan 30, 2023
−$8.12M
47,943 sh @ $169
HEI
HEICO CORP
Option exercise MENDELSON ERIC A · Director, Co-President · Option exercise · Dec 28, 2021
+$2.61M
122,070 sh @ $21
HEI
HEICO CORP
Tax withholding MENDELSON ERIC A · Director, Co-President · Tax withholding · Dec 28, 2021
−$8.53M
59,003 sh @ $145
HEI
HEICO CORP
Option exercise MENDELSON ERIC A · Director, Co-President · Option exercise · Dec 28, 2021
+$1.89M
122,070 sh @ $15
HEI
HEICO CORP
Tax withholding MENDELSON ERIC A · Director, Co-President · Tax withholding · Dec 28, 2021
−$7.33M
56,913 sh @ $129
HEI
HEICO CORP
Option exercise MENDELSON ERIC A · Director, Co-President · Option exercise · Sep 9, 2019
+$4.86M
305,176 sh @ $16
HEI
HEICO CORP
Tax withholding MENDELSON ERIC A · Director, Co-President · Tax withholding · Sep 9, 2019
−$18.99M
142,169 sh @ $134
HEI
HEICO CORP
Option exercise MENDELSON ERIC A · Director, Co-President · Option exercise · Mar 1, 2019
+$4.19M
381,470 sh @ $11
HEI
HEICO CORP
Tax withholding MENDELSON ERIC A · Director, Co-President · Tax withholding · Mar 1, 2019
−$16.61M
177,200 sh @ $94
HEI
HEICO CORP
Option exercise MENDELSON ERIC A · Director, Co-President · Option exercise · Mar 14, 2018
+$3.95M
381,470 sh @ $10
HEI
HEICO CORP
Tax withholding MENDELSON ERIC A · Director, Co-President · Tax withholding · Mar 14, 2018
−$15.92M
176,700 sh @ $90

Frequently asked questions

How is MENDELSON ERIC A's win rate calculated?

We take every open-market purchase (SEC code P) we can match to a stock price, then compare the split- and dividend-adjusted price on the purchase date to the most recent close. The win rate is the share of those buys currently trading above the purchase price. Sales and share grants are not scored.

Why are some buys not included in the score?

A purchase is excluded if we can't price it — for example if the ticker is missing from the filing, the company has been delisted, or the security isn't a common stock we can match to market data. Excluded counts are shown next to the scored total.

What do the 1M / 3M / 6M / 12M columns mean?

They show each purchase's return after a fixed holding period — one, three, six, and twelve months from the buy date — using split- and dividend-adjusted prices. This separates good entry timing from simply holding a long-running winner. A dash means that horizon hasn't elapsed yet for that trade, or the stock couldn't be priced at that date.

Does a high win rate mean I should copy this insider?

No. Past performance does not predict future results, sample sizes are often small, and an insider's edge in their own company doesn't transfer to yours. This is context, not a recommendation. InsiderSource is not investment advice.

Where does this data come from?

Trades come from MENDELSON ERIC A's SEC Form 4 filings on EDGAR. Prices come from public market data and are split/dividend-adjusted. Always verify against the original filings before acting.