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Who

Daniel M. Friedberg

Director and 10% owner

Company insider

Files Form 4 as: Director and 10% owner and Other, MultiSensor AI Holdings; Director and 10% owner, Quest Resource Holding; Director and 10% owner, TransAct Technologies; 10% owner and Other, American Public Education; Director and Other, Tigo Energy; Director, Roth CH Acquisition III Co; Director, Reservoir Media, Inc; Director, Gp Strategies.

Every Form 4 they filed

In numbers

Trades disclosed
231
Buys
110
Sells
1
Bought
$21.3M
Sold
$0
Companies
11
Companies where not an officer
11
First trade
28 Oct 2008
Last trade
30 Sep 2026
Last filed
2 Oct 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
QRHC Quest Resource HoldingDirector, 10% owner · Waste & Environmental · last 30 Sep 202611 buys · 0 sells
MSAI MultiSensor AI HoldingsDirector, 10% owner, Other · Life-science tools · last 30 Sep 20260 buys · 0 sells
TACT TransAct TechnologiesDirector, 10% owner · Hardware, Devices & Storage · last 4 May 20250 buys · 0 sells
APEI American Public Education10% owner, Other · Education Services · last 23 Aug 20246 buys · 0 sells
TYGO Tigo EnergyDirector, Other · Solar & Renewables · last 23 May 20231 buy · 1 sell
Roth CH Acquisition III CoDirector · last 5 Mar 20211 buy · 0 sells
RSVR Reservoir Media, IncDirector · Streaming & media · last 15 Dec 20201 buy · 0 sells
Gp StrategiesDirector · last 30 Jun 201679 buys · 0 sells
InnerworkingsDirector · last 6 Jun 20160 buys · 0 sells
Performance Sports GroupDirector · last 1 Jun 201610 buys · 0 sells
X RiteDirector · last 15 May 20121 buy · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
02Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
30 Sep 2026filed 2 Oct 2026MSAI MultiSensor AI HoldingsLife-science toolsSEC FORM 4 Code A—4,210 at $0.00filing
30 Sep 2026filed 2 Oct 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$28K20,529 at $1.36filing
31 Aug 2026filed 2 Sep 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$28K19,942 at $1.40filing
31 Aug 2026filed 2 Sep 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$28K19,942 at $1.40filing
13 Aug 2026filed 17 Aug 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$42K28,767 at $1.46filing
31 Jul 2026filed 4 Aug 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$28K21,984 at $1.27filing
31 Jul 2026filed 4 Aug 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$28K21,984 at $1.27filing
30 Jun 2026filed 2 Jul 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$28K22,158 at $1.26filing
30 Jun 2026filed 2 Jul 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$28K22,158 at $1.26filing
30 Jun 2026filed 2 Jul 2026MSAI MultiSensor AI HoldingsLife-science toolsSEC FORM 4 Code A—3,738 at $0.00filing
30 Jun 2026filed 2 Jul 2026MSAI MultiSensor AI HoldingsLife-science toolsSEC FORM 4 Code A—3,738 at $0.00filing
31 May 2026filed 2 Jun 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$28K23,661 at $1.18filing
30 Apr 2026filed 4 May 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$15K13,289 at $1.13filing
30 Apr 2026filed 4 May 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$15K13,289 at $1.13filing
31 Mar 2026filed 2 Apr 2026MSAI MultiSensor AI HoldingsLife-science toolsSEC FORM 4 Code A—95,238 at $0.00filing
31 Mar 2026filed 2 Apr 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$15K12,619 at $1.19filing
31 Mar 2026filed 2 Apr 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$15K12,619 at $1.19filing
19 Mar 2026filed 23 Mar 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Bought$7,3958,500 at $0.87filing
28 Feb 2026filed 3 Mar 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$15K8,532 at $1.76filing
28 Feb 2026filed 3 Mar 2026QRHC Quest Resource HoldingWaste & EnvironmentalSEC FORM 4 Code A$15K8,532 at $1.76filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Industrials11
Consumer Discretionary6
Energy2
Communications1
Not placed91

Buys in green, sells in red, by the company’s sector.

Related people

Stuart Flavin VDirector · Director at MultiSensor AI Holdings, filing Form 4 there in the last year
David GowDirector · Director at MultiSensor AI Holdings, filing Form 4 there in the last year
Glenn CulpepperDirector · Director at Quest Resource Holding, filing Form 4 there in the last year
Stephen A. NolanDirector · Director at Quest Resource Holding, filing Form 4 there in the last year
Sarah TomoloniusDirector · Director at Quest Resource Holding, filing Form 4 there in the last year
James KenigsbergChief Inno & Tech Officer · Also traded APEI in the last 90 days
Nuno S. FernandesPresident, APUS · Also traded APEI in the last 90 days