Biggest Insider Buys: October 2025

The largest open-market insider purchases disclosed in SEC Form 4 filings, ranked by dollar value.

In October 2025, 33 open-market insider purchases of $50K or more were disclosed across 27 companies in SEC Form 4 filings, totaling $36.3M. The largest single purchase was $16.2M by Novo Holdings A/S at MapLight Therapeutics, Inc. (MPLT).

← All monthly rankings

Largest purchases · October 2025

Source
MPLTPurchase$16.2MOct 30SEC ↗
EGPurchase$3.5MOct 30SEC ↗
AMRZPurchase$2.9MOct 31SEC ↗
CLSPurchase$2.1MOct 30SEC ↗
BAHPurchase$2.0MOct 30SEC ↗
BXPurchase$2.0MOct 31SEC ↗
CGEMPurchase$1.4MOct 30SEC ↗
AVTRPurchase$1.1MOct 31SEC ↗
EGPurchase$949KOct 30SEC ↗
SONPurchase$810KOct 30SEC ↗
ASAPurchase$582KOct 30SEC ↗
ASAPurchase$414KOct 30SEC ↗
WALPurchase$308KOct 30SEC ↗
OPKPurchase$213KOct 31SEC ↗
ITGRPurchase$203KOct 30SEC ↗
GAMPurchase$185KOct 30SEC ↗
AFBPurchase$150KOct 31SEC ↗
CHMGPurchase$113KOct 30SEC ↗
TCBIPurchase$104KOct 30SEC ↗
WDFCPurchase$103KOct 30SEC ↗
UTGPurchase$102KOct 27SEC ↗
WSBCPurchase$100KOct 31SEC ↗
SONPurchase$100KOct 30SEC ↗
WDFCPurchase$97KOct 30SEC ↗
GAMPurchase$95KOct 30SEC ↗