Dana C. O'Brien

Insider

First SEC filing: May 11, 2026 · Latest: May 11, 2026

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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.
Initial holdings The stakes this person held when they first started reporting.
Compensation Executive pay disclosed in company proxy statements.

Insider at

Insider transactions

0 buys (P) 3 sells (S) Net: $-1,610,000 + 89 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

89 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 22, 2026	ASIX	A	6,207	—	—	6,207 Direct	—	Acquired	(price as of 2026-08-20)
May 7, 2026	STRL	A	181	—	—	11,679 Direct	+1.57%	Acquired	(price as of 2026-08-20)
Feb. 9, 2026	STRL	S 10b5-1	2,000	$410.00	$820,000	11,498 Direct	-14.82%	Disposed	27.2% (price as of 2026-08-20)
Feb. 6, 2026	STRL	S 10b5-1	1,000	$390.00	$390,000	14,498 Direct	-6.45%	Disposed	33.8% (price as of 2026-08-20)
Feb. 6, 2026	STRL	S 10b5-1	1,000	$400.00	$400,000	13,498 Direct	-6.90%	Disposed	30.4% (price as of 2026-08-20)
Nov. 12, 2025	STRL	G	1,000	—	—	15,498 Direct	-6.06%	Disposed	(price as of 2026-08-20)
June 16, 2025	STRL	S 10b5-1	10,154	$206.58	$2,097,613	16,498 Direct	-38.10%	Disposed	152.5% (price as of 2026-08-20)
May 8, 2025	STRL	A	751	—	—	26,652 Direct	+2.90%	Acquired	(price as of 2026-08-20)
Feb. 20, 2025	OLN	A	17,379	—	—	17,379 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 19, 2025	OLN	A	2,098	—	—	2,098 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 18, 2024	STRL	S	2,000	$175.89	$351,780	25,901 Direct	-7.17%	Disposed	196.6% (price as of 2026-08-20)
June 24, 2024	STRL	G	2,716	—	—	27,901 Direct	-8.87%	Disposed	(price as of 2026-08-20)
May 9, 2024	STRL	A	1,074	—	—	30,617 Direct	+3.64%	Acquired	(price as of 2026-08-20)
Feb. 22, 2024	OLN	A	22,756	—	—	22,756 Direct	—	Acquired	(price as of 2026-08-20)
May 3, 2023	STRL	A	3,353	$40.26	$134,992	29,543 Direct	+12.80%	Acquired	1195.7% (price as of 2026-08-20)
Feb. 22, 2023	OLN	A	17,575	—	—	17,575 Direct	—	Acquired	(price as of 2026-08-20)
May 4, 2022	STRL	A	4,269	—	—	26,190 Direct	+19.47%	Acquired	(price as of 2026-08-20)
Feb. 22, 2022	OLN	A	21,600	—	—	21,600 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 29, 2021	OLN	A	35,000	—	—	35,000 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 29, 2021	BCO	A	65	$68.88	$4,477	2,023 Direct	+3.32%	Acquired	62.4% (price as of 2026-08-20)
Sept. 30, 2021	BCO	A	70	$63.30	$4,431	1,958 Direct	+3.71%	Acquired	76.7% (price as of 2026-08-20)
Sept. 1, 2021	BCO	A	5	$78.30	$392	1,888 Direct	+0.27%	Acquired	42.9% (price as of 2026-08-20)
Aug. 31, 2021	BCO	A	57	$78.16	$4,455	1,883 Direct	+3.12%	Acquired	43.1% (price as of 2026-08-20)
July 30, 2021	BCO	A	58	$76.96	$4,464	1,826 Direct	+3.28%	Acquired	45.4% (price as of 2026-08-20)
June 30, 2021	BCO	A	58	$76.84	$4,457	1,768 Direct	+3.39%	Acquired	45.6% (price as of 2026-08-20)
June 1, 2021	BCO	A	5	$75.29	$376	1,710 Direct	+0.29%	Acquired	48.6% (price as of 2026-08-20)
May 28, 2021	BCO	A	59	$75.41	$4,449	1,706 Direct	+3.58%	Acquired	48.3% (price as of 2026-08-20)
May 5, 2021	STRL	A	4,307	—	—	21,921 Direct	+24.45%	Acquired	(price as of 2026-08-20)
April 30, 2021	BCO	A	56	$79.92	$4,476	1,646 Direct	+3.52%	Acquired	40.0% (price as of 2026-08-20)
April 25, 2021	BCO	F	744	$77.22	$57,452	13,713 Direct	-5.15%	Disposed	44.9% (price as of 2026-08-20)
March 31, 2021	BCO	A	444	$79.23	$35,178	1,591 Direct	+38.71%	Acquired	41.2% (price as of 2026-08-20)
March 31, 2021	BCO	A	56	$79.23	$4,437	1,147 Direct	+5.13%	Acquired	41.2% (price as of 2026-08-20)
March 1, 2021	BCO	A	2	$79.69	$159	1,091 Direct	+0.18%	Acquired	40.4% (price as of 2026-08-20)
Feb. 26, 2021	BCO	A	56	$76.83	$4,302	1,089 Direct	+5.42%	Acquired	45.6% (price as of 2026-08-20)
Feb. 24, 2021	BCO	A	3,030	—	—	14,457 Direct	+26.52%	Acquired	(price as of 2026-08-20)
Feb. 20, 2021	BCO	F	335	$72.76	$24,375	11,427 Direct	-2.85%	Disposed	53.8% (price as of 2026-08-20)
Jan. 29, 2021	BCO	A	63	$68.13	$4,292	1,033 Direct	+6.49%	Acquired	64.2% (price as of 2026-08-20)
Dec. 3, 2020	BCO	A	4,312	—	—	11,762 Direct	+57.88%	Acquired	(price as of 2026-08-20)
Dec. 1, 2020	BCO	A	2	$68.77	$138	964 Direct	+0.21%	Acquired	62.7% (price as of 2026-08-20)
Sept. 1, 2020	BCO	A	3	$45.41	$136	966 Direct	+0.31%	Acquired	146.4% (price as of 2026-08-20)
June 1, 2020	BCO	A	3	$41.62	$125	966 Direct	+0.31%	Acquired	168.8% (price as of 2026-08-20)
May 6, 2020	STRL	A	7,885	$10.78	$85,000	17,614 Direct	+81.05%	Acquired	4739.1% (price as of 2026-08-20)
April 25, 2020	BCO	F	263	$44.13	$11,606	7,450 Direct	-3.41%	Disposed	153.5% (price as of 2026-08-20)
April 25, 2020	BCO	F	197	$44.13	$8,694	7,713 Direct	-2.49%	Disposed	153.5% (price as of 2026-08-20)
March 31, 2020	BCO	A	362	$52.05	$18,842	879 Direct	+70.02%	Acquired	114.9% (price as of 2026-08-20)
March 31, 2020	BCO	A	84	$52.05	$4,372	962 Direct	+9.57%	Acquired	114.9% (price as of 2026-08-20)
March 2, 2020	BCO	A	1	$81.56	$82	517 Direct	+0.19%	Acquired	37.2% (price as of 2026-08-20)
Feb. 28, 2020	BCO	A	55	$78.29	$4,306	516 Direct	+11.93%	Acquired	42.9% (price as of 2026-08-20)
Feb. 20, 2020	BCO	A	8,865	—	—	8,865 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 20, 2020	BCO	A	2,249	—	—	7,910 Direct	+39.73%	Acquired	(price as of 2026-08-20)
Jan. 31, 2020	BCO	A	51	$84.19	$4,294	461 Direct	+12.44%	Acquired	32.9% (price as of 2026-08-20)
Dec. 31, 2019	BCO	A	47	$90.68	$4,262	410 Direct	+12.95%	Acquired	23.4% (price as of 2026-08-20)
Dec. 2, 2019	BCO	A	1	$91.64	$92	363 Direct	+0.28%	Acquired	22.1% (price as of 2026-08-20)
Nov. 29, 2019	BCO	A	46	$93.00	$4,278	362 Direct	+14.56%	Acquired	20.3% (price as of 2026-08-20)
Oct. 31, 2019	BCO	A	51	$84.96	$4,333	316 Direct	+19.25%	Acquired	31.7% (price as of 2026-08-20)
Sept. 30, 2019	BCO	A	52	$82.95	$4,313	266 Direct	+24.30%	Acquired	34.9% (price as of 2026-08-20)
Sept. 3, 2019	BCO	A	0	$73.39	—	214 Direct	0.00%	Acquired	52.4% (price as of 2026-08-20)
Aug. 30, 2019	BCO	A	57	$75.25	$4,289	213 Direct	+36.54%	Acquired	48.7% (price as of 2026-08-20)
July 31, 2019	BCO	A	48	$90.16	$4,328	156 Direct	+44.44%	Acquired	24.1% (price as of 2026-08-20)
June 28, 2019	BCO	A	53	$81.18	$4,303	109 Direct	+94.64%	Acquired	37.8% (price as of 2026-08-20)
June 3, 2019	BCO	A	0	$78.89	—	56 Direct	0.00%	Acquired	41.8% (price as of 2026-08-20)
May 31, 2019	BCO	A	56	$77.00	$4,312	56 Direct	—	Acquired	45.3% (price as of 2026-08-20)
May 8, 2019	STRL	A	7,013	$12.12	$84,998	9,729 Direct	+258.21%	Acquired	4204.1% (price as of 2026-08-20)
April 25, 2019	BCO	A	8,827	—	—	8,827 Direct	—	Acquired	(price as of 2026-08-20)
April 25, 2019	BCO	A	5,661	—	—	5,661 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 28, 2019	CNP	F	10,499	$30.14	$316,440	80,255 Direct	-11.57%	Disposed	34.2% (price as of 2026-08-20)
Feb. 28, 2019	CNP	A	35,443	—	—	90,754 Direct	+64.08%	Acquired	(price as of 2026-08-20)
Feb. 24, 2019	CNP	F	2,461	$31.40	$77,275	55,311 Direct	-4.26%	Disposed	28.9% (price as of 2026-08-20)
Feb. 19, 2019	CNP	A	8,906	$31.21	$277,956	57,772 Direct	+18.23%	Acquired	29.6% (price as of 2026-08-20)
Jan. 1, 2019	STRL	A	2,716	—	—	2,716 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2018	CNP	F	2,865	$27.00	$77,355	48,866 Direct	-5.54%	Disposed	49.9% (price as of 2026-08-20)
Feb. 22, 2018	CNP	A	11,763	—	—	51,731 Direct	+29.43%	Acquired	(price as of 2026-08-20)
Feb. 20, 2018	CNP	A	9,248	$26.73	$247,199	39,968 Direct	+30.10%	Acquired	51.4% (price as of 2026-08-20)
Feb. 19, 2018	CNP	F	1,680	$26.91	$45,209	30,720 Direct	-5.19%	Disposed	50.4% (price as of 2026-08-20)
Feb. 28, 2017	CNP	A	5,548	—	—	33,914 Direct	+19.56%	Acquired	(price as of 2026-08-20)
Feb. 28, 2017	CNP	F	1,514	$27.32	$41,362	32,400 Direct	-4.46%	Disposed	48.1% (price as of 2026-08-20)
Feb. 21, 2017	CNP	A	8,737	$26.61	$232,492	28,366 Direct	+44.51%	Acquired	52.0% (price as of 2026-08-20)
Feb. 18, 2017	CNP	F	1,460	$26.51	$38,705	19,629 Direct	-6.92%	Disposed	52.6% (price as of 2026-08-20)
Feb. 24, 2016	CNP	A	9,719	$18.86	$183,300	21,089 Direct	+85.48%	Acquired	114.5% (price as of 2026-08-20)
Feb. 19, 2015	CNP	A	6,460	—	—	11,370 Direct	+131.57%	Acquired	(price as of 2026-08-20)
May 12, 2014	CNP	A	4,910	—	—	4,910 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 28, 2005	PWR	D	27,830	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 16, 2005	PWR	S	1,035	$7.41	$7,669	27,830 Direct	-3.59%	Disposed	8953.6% (price as of 2026-08-20)
March 16, 2005	PWR	S	9,100	$7.40	$67,340	28,865 Direct	-23.97%	Disposed	8965.9% (price as of 2026-08-20)
March 15, 2005	PWR	A	10,218	—	—	37,965 Direct	+36.83%	Acquired	(price as of 2026-08-20)
March 1, 2005	PWR	F	794	$8.00	$6,352	31,734 Direct	-2.44%	Disposed	8285.9% (price as of 2026-08-20)
March 1, 2005	PWR	F	3,987	$8.00	$31,896	27,747 Direct	-12.56%	Disposed	8285.9% (price as of 2026-08-20)
March 17, 2004	PWR	A	8,086	—	—	41,150 Direct	+24.46%	Acquired	(price as of 2026-08-20)
March 5, 2004	PWR	D	1,400	$8.23	$11,522	33,064 Direct	-4.06%	Disposed	8051.6% (price as of 2026-08-20)
March 5, 2004	PWR	D	2,000	$8.22	$16,440	34,464 Direct	-5.48%	Disposed	8061.5% (price as of 2026-08-20)
March 5, 2004	PWR	D	2,000	$8.21	$16,420	36,464 Direct	-5.20%	Disposed	8071.4% (price as of 2026-08-20)
March 5, 2004	PWR	D	900	$8.20	$7,380	38,464 Direct	-2.29%	Disposed	8081.4% (price as of 2026-08-20)
March 5, 2004	PWR	D	1,000	$8.19	$8,190	39,364 Direct	-2.48%	Disposed	8091.4% (price as of 2026-08-20)
March 5, 2004	PWR	D	800	$8.18	$6,544	40,364 Direct	-1.94%	Disposed	8101.4% (price as of 2026-08-20)
March 5, 2004	PWR	D	151	$8.17	$1,234	41,164 Direct	-0.37%	Disposed	8111.4% (price as of 2026-08-20)
March 2, 2004	PWR	F	3,970	$8.60	$34,142	41,315 Direct	-8.77%	Disposed	7700.9% (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
Feb. 20, 2025	OLN	Restricted Stock Units	Common Stock (17,379)	—	—	17,379	Acquired
Feb. 22, 2024	OLN	Employee Stock Options (Right to Buy)	Common Stock (22,756)	$52.29	Feb. 22, 2034	22,756	Acquired
Feb. 22, 2023	OLN	Employee Stock Options (Right to Buy)	Common Stock (17,575)	$60.55	Feb. 22, 2033	17,575	Acquired
Feb. 22, 2022	OLN	Employee Stock Options (Right to Buy)	Common Stock (21,600)	$49.71	Feb. 22, 2032	21,600	Acquired
Nov. 29, 2021	OLN	Employee Stock Options (Right to Buy)	Common Stock (35,000)	$58.59	Nov. 29, 2031	35,000	Acquired
Oct. 29, 2021	BCO	Plan Units	Common Stock (65)	—	—	65	Acquired
Sept. 30, 2021	BCO	Plan Units	Common Stock (70)	—	—	70	Acquired
Sept. 1, 2021	BCO	Units	Common Stock (5)	—	—	5	Acquired
Aug. 31, 2021	BCO	Units	Common Stock (57)	—	—	57	Acquired
July 30, 2021	BCO	Units	Common Stock (58)	—	—	58	Acquired
June 30, 2021	BCO	Units	Common Stock (58)	—	—	58	Acquired
June 1, 2021	BCO	Units	Common Stock	—	—	5	Acquired
May 28, 2021	BCO	Units	Common Stock	—	—	59	Acquired
April 30, 2021	BCO	Units	Common Stock	—	—	56	Acquired
March 31, 2021	BCO	Units	Common Stock	—	—	444	Acquired
March 31, 2021	BCO	Units	Common Stock	—	—	56	Acquired
March 1, 2021	BCO	Units	Common Stock	—	—	2	Acquired
Feb. 26, 2021	BCO	Units	Common Stock	—	—	56	Acquired
Jan. 29, 2021	BCO	Units	Common Stock	—	—	63	Acquired
Dec. 1, 2020	BCO	Units	Common Stock	—	—	2	Acquired
Sept. 1, 2020	BCO	Units	Common Stock	—	—	3	Acquired
June 1, 2020	BCO	Units	Common Stock	—	—	3	Acquired
March 31, 2020	BCO	Units	Common Stock	—	—	362	Acquired
March 31, 2020	BCO	Units	Common Stock	—	—	84	Acquired
March 2, 2020	BCO	Units	Common Stock	—	—	1	Acquired
Feb. 28, 2020	BCO	Units	Common Stock	—	—	55	Acquired
Feb. 20, 2020	BCO	Employee Stock Options (Right to Buy)	Common Stock (8,865)	$84.52	Feb. 20, 2026	8,865	Acquired
Jan. 31, 2020	BCO	Units	Common Stock	—	—	51	Acquired
Dec. 31, 2019	BCO	Units	Common Stock	—	—	47	Acquired
Dec. 2, 2019	BCO	Units	Common Stock	—	—	1	Acquired
Nov. 29, 2019	BCO	Units	Common Stock	—	—	46	Acquired
Oct. 31, 2019	BCO	Units	Common Stock	—	—	51	Acquired
Sept. 30, 2019	BCO	Units	Common Stock	—	—	52	Acquired
Sept. 3, 2019	BCO	Units	Common Stock	—	—	0	Acquired
Aug. 30, 2019	BCO	Units	Common Stock	—	—	57	Acquired
July 31, 2019	BCO	Units	Common Stock	—	—	48	Acquired
June 28, 2019	BCO	Units	Common Stock	—	—	53	Acquired
June 3, 2019	BCO	Units	Common Stock	—	—	0	Acquired
May 31, 2019	BCO	Units	Common Stock	—	—	56	Acquired
April 25, 2019	BCO	Employee Stock Options (Right to Buy)	Common Stock (8,827)	$78.43	April 25, 2025	8,827	Acquired

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

Initial ownership (Form 3) 3 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Ownership
Sept. 8, 2025	ASIX	Common Stock, par value $0.01	Direct
Nov. 29, 2021	OLN	Common Stock $1 par value	Direct
May 21, 2014	CNP	No securities are beneficially owned	Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

BCO

General Counsel

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2019	$366,742	—	—	—	$211,974	—	$238,944	$2,067,328

CNP

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2018	$511,249	—	—	—	$427,000	$35,254	$74,099	$1,871,608
2017	$492,500	—	—	—	$430,000	$45,937	$51,433	$1,794,861

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.