David P. Poroch

Insider

First SEC filing: March 15, 2023 · Latest: March 15, 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.
Initial holdings The stakes this person held when they first started reporting.

Insider at

SOMN selling Jan. 17, 2024

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 47 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

47 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 11, 2026	SOMN	M	558	—	—	1,114 Direct	-33.37%	Disposed	(price as of 2026-08-21)
Feb. 11, 2026	SOMN	F	281	$90.86	$25,532	48,156 Direct	-0.58%	Disposed	-46.1% (price as of 2026-08-21)
Feb. 11, 2026	SOMN	M	568	—	—	48,437 Direct	+1.19%	Acquired	(price as of 2026-08-21)
Feb. 11, 2026	SOMN	F	2,914	$90.86	$264,766	47,869 Direct	-5.74%	Disposed	-46.1% (price as of 2026-08-21)
Feb. 11, 2026	SOMN	A	9,454	—	—	50,783 Direct	+22.87%	Acquired	(price as of 2026-08-21)
Feb. 5, 2026	SOMN	M	566	—	—	1,130 Direct	-33.37%	Disposed	(price as of 2026-08-21)
Feb. 5, 2026	SOMN	F	160	$91.08	$14,573	41,329 Direct	-0.39%	Disposed	-46.3% (price as of 2026-08-21)
Feb. 5, 2026	SOMN	M	585	—	—	41,489 Direct	+1.43%	Acquired	(price as of 2026-08-21)
Feb. 1, 2026	SOMN	M	731	—	—	41,160 Direct	+1.81%	Acquired	(price as of 2026-08-21)
Feb. 1, 2026	SOMN	F	256	$89.31	$22,863	40,904 Direct	-0.62%	Disposed	-45.2% (price as of 2026-08-21)
Feb. 1, 2026	SOMN	M	655	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 31, 2026	SOMN	F	198	$89.31	$17,683	40,429 Direct	-0.49%	Disposed	-45.2% (price as of 2026-08-21)
Jan. 31, 2026	SOMN	M	676	—	—	676 Direct	-50.00%	Disposed	(price as of 2026-08-21)
Jan. 31, 2026	SOMN	M	725	—	—	40,627 Direct	+1.82%	Acquired	(price as of 2026-08-21)
April 30, 2025	SOMN	M	57	—	—	1,696 Direct	-3.25%	Disposed	(price as of 2026-08-21)
April 30, 2025	SOMN	F	58	$91.89	$5,330	39,902 Direct	-0.15%	Disposed	-46.8% (price as of 2026-08-21)
April 30, 2025	SOMN	M	58	—	—	39,960 Direct	+0.15%	Acquired	(price as of 2026-08-21)
Feb. 13, 2025	SOMN	M	429	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 13, 2025	SOMN	F	144	$86.78	$12,496	39,902 Direct	-0.36%	Disposed	-43.6% (price as of 2026-08-21)
Feb. 13, 2025	SOMN	M	480	—	—	40,046 Direct	+1.21%	Acquired	(price as of 2026-08-21)
Feb. 5, 2025	SOMN	A	1,753	—	—	1,753 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 5, 2025	SOMN	F	1,728	$83.87	$144,927	39,566 Direct	-4.18%	Disposed	-41.7% (price as of 2026-08-21)
Feb. 5, 2025	SOMN	A	5,826	—	—	41,294 Direct	+16.43%	Acquired	(price as of 2026-08-21)
Feb. 1, 2025	SOMN	M	655	—	—	655 Direct	-50.00%	Disposed	(price as of 2026-08-21)
Feb. 1, 2025	SOMN	F	211	$83.95	$17,713	35,092 Direct	-0.60%	Disposed	-41.7% (price as of 2026-08-21)
Feb. 1, 2025	SOMN	M	707	—	—	35,303 Direct	+2.04%	Acquired	(price as of 2026-08-21)
Jan. 31, 2025	SOMN	M	676	—	—	1,352 Direct	-33.33%	Disposed	(price as of 2026-08-21)
Jan. 31, 2025	SOMN	F	325	$83.95	$27,284	35,468 Direct	-0.91%	Disposed	-41.7% (price as of 2026-08-21)
Jan. 31, 2025	SOMN	M	701	—	—	35,793 Direct	+2.00%	Acquired	(price as of 2026-08-21)
Feb. 13, 2024	SOMN	M	429	—	—	429 Direct	-50.00%	Disposed	(price as of 2026-08-21)
Feb. 13, 2024	SOMN	F	141	$67.51	$9,519	34,596 Direct	-0.41%	Disposed	-27.5% (price as of 2026-08-21)
Feb. 13, 2024	SOMN	M	464	—	—	34,737 Direct	+1.35%	Acquired	(price as of 2026-08-21)
Feb. 7, 2024	SOMN	F	2,045	$66.95	$136,913	34,273 Direct	-5.63%	Disposed	-26.9% (price as of 2026-08-21)
Feb. 7, 2024	SOMN	A	6,791	—	—	36,318 Direct	+23.00%	Acquired	(price as of 2026-08-21)
Feb. 6, 2024	SOMN	A	2,028	—	—	2,028 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 3, 2024	SOMN	M	457	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 3, 2024	SOMN	F	156	$68.65	$10,709	29,527 Direct	-0.53%	Disposed	-28.7% (price as of 2026-08-21)
Feb. 3, 2024	SOMN	M	515	—	—	29,683 Direct	+1.77%	Acquired	(price as of 2026-08-21)
Feb. 1, 2024	SOMN	M	656	—	—	1,310 Direct	-33.37%	Disposed	(price as of 2026-08-21)
Feb. 1, 2024	SOMN	F	207	$70.50	$14,594	29,168 Direct	-0.70%	Disposed	-30.6% (price as of 2026-08-21)
Feb. 1, 2024	SOMN	M	684	—	—	29,375 Direct	+2.38%	Acquired	(price as of 2026-08-21)
Jan. 17, 2024	SOMN	M	10,099	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 17, 2024	SOMN	S	10,099	$69.96	$706,526	28,691 Direct	-26.04%	Disposed	-30.1% (price as of 2026-08-21)
Jan. 17, 2024	SOMN	M	10,099	—	—	38,790 Direct	+35.20%	Acquired	(price as of 2026-08-21)
Nov. 16, 2023	SOMN	M	10,000	—	—	10,099 Direct	-49.75%	Disposed	(price as of 2026-08-21)
Nov. 16, 2023	SOMN	S	10,000	$69.39	$693,900	28,691 Direct	-25.85%	Disposed	-29.5% (price as of 2026-08-21)
Nov. 16, 2023	SOMN	M	10,000	$41.28	$412,800	38,691 Direct	+34.85%	Acquired	18.5% (price as of 2026-08-21)
June 5, 2023	SOMN	M	10,000	—	—	20,099 Direct	-33.22%	Disposed	(price as of 2026-08-21)
June 5, 2023	SOMN	S	10,000	$70.05	$700,500	28,691 Direct	-25.85%	Disposed	-30.1% (price as of 2026-08-21)
June 5, 2023	SOMN	M	10,000	—	—	38,691 Direct	+34.85%	Acquired	(price as of 2026-08-21)

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. 11, 2026	SOMN	Performance Restricted Stock Units	Southern Company Common Stock (558)	$0.00	—	558	Disposed
Feb. 5, 2026	SOMN	Southern Co Restricted Stock Units	Southern Company Common Stock (566)	$0.00	—	566	Disposed
Feb. 1, 2026	SOMN	Southern Co. Restricted Stock Units Holdings	Southern Company Common Stock (655)	$0.00	—	655	Disposed
Jan. 31, 2026	SOMN	Southern Co Restricted Stock Units	Southern Company Common Stock (676)	$0.00	—	676	Disposed
April 30, 2025	SOMN	Southern Co Restricted Stock Units	Southern Company Common Stock (57)	$0.00	—	57	Disposed
Feb. 13, 2025	SOMN	Southern Co Restricted Stock Units	Southern Company Common Stock	$0.00	—	429	Disposed
Feb. 5, 2025	SOMN	Southern Co Restricted Stock Units	Southern Company Common Stock (1,753)	$0.00	—	1,753	Acquired
Feb. 1, 2025	SOMN	Southern Co. Restricted Stock Units Holdings	Southern Company Common Stock (655)	$0.00	—	655	Disposed
Jan. 31, 2025	SOMN	Southern Co Restricted Stock Units	Southern Company Common Stock (676)	$0.00	—	676	Disposed
Feb. 13, 2024	SOMN	Southern Co Restricted Stock Units	Southern Company Common Stock (429)	$0.00	—	429	Disposed
Feb. 6, 2024	SOMN	Southern Co Restricted Stock Units	Southern Company Common Stock (2,028)	$0.00	—	2,028	Acquired
Feb. 3, 2024	SOMN	Southern Co Restricted Stock Units	Southern Company Common Stock (457)	$0.00	—	457	Disposed
Feb. 1, 2024	SOMN	Southern Co Restricted Stock Units [F3]	Southern Company Common Stock (656)	$0.00	—	656	Disposed
Jan. 17, 2024	SOMN	Option Right to Buy	Southern Company Common Stock (10,099)	$41.28	Feb. 10, 2024	10,099	Disposed
Nov. 16, 2023	SOMN	Option Right to Buy	Southern Company Common Stock (10,000)	$41.28	Feb. 10, 2024	10,000	Disposed
June 5, 2023	SOMN	Option Right to Buy	Southern Company Common Stock (10,000)	$41.28	Feb. 10, 2024	10,000	Disposed

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

Initial ownership (Form 3) 8 holdings

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

Date	Ticker	Security	Shares	Ownership
March 15, 2023	SOMN	Southern Company Common Stock	28,691	Direct
March 15, 2023	SOMN	Southern Company Common Stock	100	Indirect
March 15, 2023	SOMN	Southern Company Common Stock	4,215	Indirect
March 15, 2023	SOMN	Option Right to Buy→ Southern Company Common Stock (30,099)	30,099	Direct
March 15, 2023	SOMN	Phantom Stock Units [F1]→ Southern Company Common Stock (1,480)	1,480	Direct
March 15, 2023	SOMN	Southern Co Restricted Stock Units [F2]→ Southern Company Common Stock (858)	858	Direct
March 15, 2023	SOMN	Southern Co Restricted Stock Units [F3]→ Southern Company Common Stock (457)	457	Direct
Aug. 18, 2014	GPJA	Georgia Power Company Preferred Stock	0	Direct