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Guides: What is an SEC Form 4 · the transaction codes · who has to file · 10b5-1 plans
Open-market purchases by insiders.
Insider buying
Largest insider buy since 2006Traded Aug 5 · filed the same day
Since the trade
A Pfizer director paid $999K out of pocket for Pfizer shares. 2 other people at Pfizer bought some too, in the same month. Shares held went up 142% with this purchase.
Traded Aug 3 – Aug 4, 2026 · largest single transaction ~$280K
Aug 4, 2026~$92K · 4,293 sh @ $21.54
DetailsOfficial recordAug 3, 2026~$280K · 13K sh @ $21.75
DetailsOfficial recordAug 3, 2026~$137K · 6,309 sh @ $21.75
DetailsOfficial recordInsider buying
Traded Aug 4 · filed 1 day later
Since the trade +3.8% · S&P 500 −2.2% · to Nov 13
The CEO of CoStar paid $2.49M out of pocket for CoStar shares.
Insider buying
Traded Aug 4 · filed 1 day later
Since the trade −29.7% · S&P 500 −2.2% · to Nov 13
The CEO of Gbank Financial paid $198K out of pocket for Gbank Financial shares. 4 other people at Gbank Financial bought some too, in the same month. It was the first purchase in 9 months.
Traded Jul 28 – Jul 30, 2026 · largest single transaction ~$3.35M
Jul 30, 2026~$3.35M · 194K sh @ $17.21
DetailsOfficial recordJul 28, 2026~$2.87M · 170K sh @ $16.88
DetailsOfficial recordJul 29, 2026~$1.84M · 109K sh @ $16.91
DetailsOfficial recordInsider buying
Largest insider buy since 2006Traded Aug 5 · filed the same day
Since the trade +11.9% · S&P 500 −2.0% · to Nov 13
Bought on the open market with their own money
Insider buying
Their first buy on recordTraded Aug 4 · filed 1 day later
Since the trade −29.7% · S&P 500 −2.2% · to Nov 13
A Gbank Financial director paid $215K out of pocket for Gbank Financial shares. 4 other people at Gbank Financial bought some too, in the same month.
Insider buying
3 insiders in a week, a first since 2006Traded Aug 4 · filed 1 day later
Since the trade +10.1% · S&P 500 −2.2% · to Nov 13
The CEO of Tractor Supply paid $85K out of pocket for Tractor Supply shares. 2 other people at Tractor Supply bought some too, in the same month.
Insider buying
3 insiders in a week, 7th time since 2006Traded Aug 3 · filed 2 days later
Since the trade −8.4% · S&P 500 −0.4% · to Nov 13
A Boston Scientific director paid $50K out of pocket for Boston Scientific shares. 3 other people at Boston Scientific bought some too, in the same month. Shares held went up 8% with this purchase.
Insider buying
Their first buy on recordTraded Aug 4 · filed 1 day later
Since the trade −29.7% · S&P 500 −2.2% · to Nov 13
A Gbank Financial director paid $105K out of pocket for Gbank Financial shares. 4 other people at Gbank Financial bought some too, in the same month.
Insider buying
7 days before an 8-KTraded Aug 3 · filed 2 days later
Since the trade +24.1% · S&P 500 −0.4% · to Nov 13
A Riverview Bancorp director paid $5.4K out of pocket for Riverview Bancorp shares. 4 other people at Riverview Bancorp bought some too, in the same month. Shares held went up 50% with this purchase.
Insider buying
10 days before resultsTraded Aug 3 · filed 2 days later
Since the trade −9.7% · S&P 500 −0.4% · to Nov 13
Camp4 Therapeutics's Chief Medical Officer paid $11K out of pocket for Camp4 Therapeutics shares. 3 other people at Camp4 Therapeutics bought some too, in the same month. Shares held went up 108% with this purchase.
Insider buying
10 days before resultsTraded Aug 3 · filed 2 days later
Since the trade −9.7% · S&P 500 −0.4% · to Nov 13
A Camp4 Therapeutics director paid $27K out of pocket for Camp4 Therapeutics shares. 3 other people at Camp4 Therapeutics bought some too, in the same month. Shares held went up 10% with this purchase.
Insider buying
10 days before resultsTraded Aug 3 · filed 2 days later
Since the trade −9.7% · S&P 500 −0.4% · to Nov 13
The CFO of Camp4 Therapeutics paid $11K out of pocket for Camp4 Therapeutics shares. 3 other people at Camp4 Therapeutics bought some too, in the same month. Shares held went up 10% with this purchase.
Insider buying
First insider buy since Dec 2021Traded Jul 17 · filed 19 days later
Since the trade −15.5% · S&P 500 +1.5% · to Nov 13
A Jabil director paid $150K out of pocket for Jabil shares. Shares held went up 17% with this purchase.
Insider buying
First insider buy since May 2017Traded Aug 3 · filed 2 days later
Since the trade −3.1% · S&P 500 −0.4% · to Nov 13
An Ingersoll Rand director paid $1M out of pocket for Ingersoll Rand shares.
Checked for new insider filings 41 min ago
