Krylov Sergei

Director at ProFrac Holding Corp. · on record since May 29, 2026
President and CEO at Approach Resources Inc · on record since Feb 25, 2015
Director at DAWSON OPERATING CO · on record since Jan 27, 2022

Insider trading activity of Krylov Sergei

Transactions on record: 28; since Jan 6, 2014

Open-market buys: 1; $27K

Open-market sells: 1; $17.6K

Companies traded: 3; last filing May 29, 2026

Figures computed from official regulatory filings — .

Companies where Krylov Sergei has traded

ProFrac Holding Corp.5 tx · $27K · May 29, 2026
DAWSON OPERATING CO4 tx · $12K · May 20, 2025
Approach Resources Inc19 tx · $159.8K · Jan 3, 2020

Track record of Krylov Sergei

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of Krylov Sergei

Co-insiders of Krylov Sergei

Wilks Dan H.Approach Resources Inc +2
Wilks FarrisApproach Resources Inc +2
Wilks MatthewApproach Resources Inc +2
Shaw Ian M.Approach Resources Inc +1
Wilks Brothers, LLCApproach Resources Inc +1
Wilks StaciApproach Resources Inc +1
Barrett William JDAWSON OPERATING CO
BEDDOW CAPITAL MANAGEMENT INCDAWSON OPERATING CO
Beddow Edward GeorgeDAWSON OPERATING CO
BELL ALAN DApproach Resources Inc
Bradley Bruce FranklinDAWSON OPERATING CO
Brandi James HApproach Resources Inc
Brata James KevinDAWSON OPERATING CO
BROWN FRANK DOUGLASDAWSON OPERATING CO
BROWN PAUL HDAWSON OPERATING CO
Buckler William Stanley IIIApproach Resources Inc
Clark William AnthonyDAWSON OPERATING CO
CLEMENTS CALVIN JDAWSON OPERATING CO

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
ProFrac Holding Corp.Listing on record	May 29, 2026	Award	22,421	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
DAWSON OPERATING COListing unverified	May 20, 2025	Award	2,640	1.27 USD	$3.4K	Unusual size	SEC
DAWSON OPERATING COListing unverified	May 20, 2025	Award	3,055	1.33 USD	$4.1K	Unusual size	SEC
DAWSON OPERATING COListing unverified	May 20, 2025	Award	3,555	1.29 USD	$4.6K		SEC
DAWSON OPERATING COListing unverified	Oct 4, 2024	Award	19,165	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProFrac Holding Corp.Listing on record	Jun 4, 2024	Award	16,129	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProFrac Holding Corp.Listing on record	Jun 5, 2023	Award	12,777	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProFrac Holding Corp.Listing on record	May 26, 2022	Award	24,166	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProFrac Holding Corp.Listing on record	May 19, 2022	Buy	1,500	18.00 USD	$27K	conv 81ClusterFirst in 12mo	SEC
Approach Resources IncListing unverified	Jan 3, 2020	Other	-103,433	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 3, 2020	Other	-27,135	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 25, 2019	Other	-36,035	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 25, 2019	Other	-40,353	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 2, 2019	Sell	-18,921	0.93 USD	$17.6K		SEC
Approach Resources IncListing unverified	Jan 2, 2019	Other	-27,135	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 29, 2018	Other	-13,933	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 29, 2018	Other	-17,704	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 2, 2018	Other	-22,281	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Mar 9, 2017	Award	310,300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 4, 2017	Other	-17,978	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 4, 2017	Other	-23,975	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 4, 2017	Other	-29,823	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Mar 4, 2016	Award	121,060	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Feb 25, 2015	Award	159,335	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Feb 25, 2014	Award	53,934	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
ProFrac Holding Corp.Listing on record	May 29, 2026	Award	22,421	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
DAWSON OPERATING COListing unverified	May 20, 2025	Award	2,640	1.27 USD	$3.4K	Unusual size	SEC
DAWSON OPERATING COListing unverified	May 20, 2025	Award	3,055	1.33 USD	$4.1K	Unusual size	SEC
DAWSON OPERATING COListing unverified	May 20, 2025	Award	3,555	1.29 USD	$4.6K		SEC
DAWSON OPERATING COListing unverified	Oct 4, 2024	Award	19,165	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProFrac Holding Corp.Listing on record	Jun 4, 2024	Award	16,129	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProFrac Holding Corp.Listing on record	Jun 5, 2023	Award	12,777	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProFrac Holding Corp.Listing on record	May 26, 2022	Award	24,166	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProFrac Holding Corp.Listing on record	May 19, 2022	Buy	1,500	18.00 USD	$27K	conv 81ClusterFirst in 12mo	SEC
Approach Resources IncListing unverified	Jan 3, 2020	Other	-103,433	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 3, 2020	Other	-27,135	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 25, 2019	Other	-36,035	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 25, 2019	Other	-40,353	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 2, 2019	Sell	-18,921	0.93 USD	$17.6K		SEC
Approach Resources IncListing unverified	Jan 2, 2019	Other	-27,135	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 29, 2018	Other	-13,933	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 29, 2018	Other	-17,704	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 2, 2018	Other	-22,281	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Mar 9, 2017	Award	310,300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 4, 2017	Other	-17,978	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 4, 2017	Other	-23,975	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Jan 4, 2017	Other	-29,823	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Mar 4, 2016	Award	121,060	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Feb 25, 2015	Award	159,335	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Approach Resources IncListing unverified	Feb 25, 2014	Award	53,934	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC