Michael W Altschaefl

Insider

First SEC filing: May 26, 2023 · Latest: May 26, 2023

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.

Insider at

OESX buying June 11, 2018

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 38 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

38 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Nov. 10, 2022	OESX	A	35,952	—	—	1,121,108 Direct	+3.31%	Acquired	(price as of 2026-08-20)
June 11, 2018	OESX	P	30,000	$0.90	$27,000	556,076 Direct	+5.70%	Acquired	102.6% (price as of 2026-08-20)
June 8, 2018	OESX	P	25,000	$0.86	$21,500	526,076 Direct	+4.99%	Acquired	112.0% (price as of 2026-08-20)
June 7, 2018	OESX	A	130,000	—	—	501,076 Direct	+35.03%	Acquired	(price as of 2026-08-20)
Feb. 23, 2018	OESX	P	24,000	$0.86	$20,640	363,829 Direct	+7.06%	Acquired	112.0% (price as of 2026-08-20)
Feb. 23, 2018	OESX	P	24,000	$0.86	$20,640	371,076 Direct	+6.91%	Acquired	112.0% (price as of 2026-08-20)
July 6, 2017	OESX	A	7,247	—	—	347,076 Direct	+2.13%	Acquired	(price as of 2026-08-20)
June 21, 2017	OESX	P	7,500	$1.31	$9,825	339,829 Direct	+2.26%	Acquired	39.2% (price as of 2026-08-20)
June 15, 2017	OESX	P	5,000	$1.35	$6,750	332,329 Direct	+1.53%	Acquired	35.0% (price as of 2026-08-20)
June 13, 2017	OESX	P	5,000	$1.39	$6,950	327,329 Direct	+1.55%	Acquired	31.2% (price as of 2026-08-20)
June 13, 2017	OESX	A	113,044	—	—	322,329 Direct	+54.01%	Acquired	(price as of 2026-08-20)
Feb. 13, 2017	OESX	A	5,405	—	—	209,285 Direct	+2.65%	Acquired	(price as of 2026-08-20)
Nov. 7, 2016	OESX	A	7,042	—	—	203,880 Direct	+3.58%	Acquired	(price as of 2026-08-20)
Aug. 5, 2016	OESX	A	12,324	—	—	196,838 Direct	+6.68%	Acquired	(price as of 2026-08-20)
Aug. 5, 2016	OESX	A	31,690	—	—	184,514 Direct	+20.74%	Acquired	(price as of 2026-08-20)
June 20, 2016	OESX	A	12,681	—	—	152,824 Direct	+9.05%	Acquired	(price as of 2026-08-20)
Nov. 6, 2015	OESX	A	4,972	—	—	140,143 Direct	+3.68%	Acquired	(price as of 2026-08-20)
Aug. 7, 2015	OESX	A	4,268	—	—	135,171 Direct	+3.26%	Acquired	(price as of 2026-08-20)
May 27, 2015	OESX	A	3,340	—	—	130,903 Direct	+2.62%	Acquired	(price as of 2026-08-20)
May 26, 2015	OESX	A	20,362	—	—	127,563 Direct	+18.99%	Acquired	(price as of 2026-08-20)
Feb. 20, 2015	OESX	P	7,143	$3.50	$25,000	107,201 Direct	+7.14%	Acquired	-47.9% (price as of 2026-08-20)
Feb. 18, 2015	OESX	A	2,073	—	—	100,058 Direct	+2.12%	Acquired	(price as of 2026-08-20)
Nov. 6, 2014	OESX	A	3,521	—	—	97,985 Direct	+3.73%	Acquired	(price as of 2026-08-20)
Aug. 7, 2014	OESX	A	1,673	—	—	94,464 Direct	+1.80%	Acquired	(price as of 2026-08-20)
May 16, 2014	OESX	P	5,000	$4.20	$21,000	92,791 Direct	+5.70%	Acquired	-56.6% (price as of 2026-08-20)
May 15, 2014	OESX	A	2,084	—	—	87,791 Direct	+2.43%	Acquired	(price as of 2026-08-20)
May 15, 2014	OESX	A	10,715	—	—	85,707 Direct	+14.29%	Acquired	(price as of 2026-08-20)
Feb. 10, 2014	OESX	A	1,750	—	—	74,992 Direct	+2.39%	Acquired	(price as of 2026-08-20)
Nov. 11, 2013	OESX	A	1,527	—	—	73,242 Direct	+2.13%	Acquired	(price as of 2026-08-20)
Aug. 6, 2013	OESX	A	2,256	—	—	71,715 Direct	+3.25%	Acquired	(price as of 2026-08-20)
May 28, 2013	OESX	A	36,568	—	—	36,568 Direct	—	Acquired	(price as of 2026-08-20)
May 28, 2013	OESX	A	7,261	—	—	69,459 Direct	+11.67%	Acquired	(price as of 2026-08-20)
Feb. 8, 2013	OESX	A	6,810	—	—	62,198 Direct	+12.30%	Acquired	(price as of 2026-08-20)
Nov. 13, 2012	OESX	P	6,000	$1.65	$9,900	55,388 Direct	+12.15%	Acquired	10.5% (price as of 2026-08-20)
June 12, 2012	OESX	A	26,646	—	—	26,646 Direct	—	Acquired	(price as of 2026-08-20)
June 12, 2012	OESX	A	8,621	—	—	49,388 Direct	+21.15%	Acquired	(price as of 2026-08-20)
Feb. 28, 2012	OESX	A	5,659	—	—	40,767 Direct	+16.12%	Acquired	(price as of 2026-08-20)
Nov. 7, 2011	OESX	A	5,000	—	—	35,108 Direct	+16.61%	Acquired	(price as of 2026-08-20)
Aug. 9, 2011	OESX	A	4,408	—	—	30,108 Direct	+17.15%	Acquired	(price as of 2026-08-20)
May 23, 2011	OESX	A	22,045	—	—	22,045 Direct	—	Acquired	(price as of 2026-08-20)
May 23, 2011	OESX	A	3,282	—	—	25,700 Direct	+14.64%	Acquired	(price as of 2026-08-20)
Feb. 4, 2011	OESX	A	3,499	—	—	22,418 Direct	+18.49%	Acquired	(price as of 2026-08-20)
Aug. 31, 2010	OESX	P	4,000	$2.40	$9,600	18,919 Direct	+26.81%	Acquired	-24.0% (price as of 2026-08-20)
Aug. 10, 2010	OESX	A	4,808	—	—	14,919 Direct	+47.55%	Acquired	(price as of 2026-08-20)
May 18, 2010	OESX	A	19,912	—	—	19,912 Direct	—	Acquired	(price as of 2026-08-20)
May 18, 2010	OESX	A	3,974	—	—	10,111 Direct	+64.75%	Acquired	(price as of 2026-08-20)
Feb. 5, 2010	OESX	A	2,528	—	—	6,137 Direct	+70.05%	Acquired	(price as of 2026-08-20)
Oct. 30, 2009	OESX	A	5,291	—	—	5,291 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 30, 2009	OESX	A	3,609	—	—	3,609 Direct	—	Acquired	(price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
May 28, 2013	OESX	Stock Options (right to buy)	Common Stock (36,568)	$2.41	May 28, 2023	36,568	Acquired
June 12, 2012	OESX	Stock Options (right to buy)	Common Stock (26,646)	$2.03	June 12, 2022	26,646	Acquired
May 23, 2011	OESX	Stock Options (right to buy)	Common Stock (22,045)	$4.19	May 23, 2021	22,045	Acquired
May 18, 2010	OESX	Stock Options (right to buy)	Common Stock (19,912)	$3.46	May 18, 2020	19,912	Acquired
Oct. 30, 2009	OESX	Stock Options (right to buy)	Common Stock (5,291)	$3.81	Oct. 30, 2019	5,291	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).