Sei Investments Co reports 11.27% decrease in ownership of MAA / Mid-America Apartment Communities, Inc.

Mid-America Apartment Communities, Inc.

US ˙ NYSE ˙ US59522J1034

Security	MAA / Mid-America Apartment Communities, Inc.
Institution	Sei Investments Co
Latest Disclosed Ownership	160,737 shares
Latest Disclosed Value	$ 22,327,851

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 160,737 shares of Mid-America Apartment Communities, Inc. (US:MAA) valued at $22,327,977 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 181,148 shares of Mid-America Apartment Communities, Inc.. This represents a change in shares of -11.27% during the quarter. The current value of the position is $22,000,073 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)

File Date	Effective Date	Form	Security	Class	ID	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-02-13	2025-12-31	13F	MID-AMER APT CMNTYS	COM	59522J103	160,737	-20,411	-11.27	22,328	-11.79	0.0220
2025-11-13	2025-09-30	13F	MID-AMER APT CMNTYS	COM	59522J103	181,148	-9,578	-5.02	25,312	-10.33	0.0272
2025-08-14	2025-06-30	13F	MID-AMER APT CMNTYS	COM	59522J103	190,726	-15,772	-7.64	28,229	-18.43	0.0327
2025-05-14	2025-03-31	13F/A-1	MID-AMER APT CMNTYS	COM	59522J103	206,498	30,056	17.03	34,605	26.89	0.0445
2025-05-13	2025-03-31	13F	MID-AMER APT CMNTYS	COM	59522J103	177,628	1,186		27,516		0.0299
2025-02-11	2024-12-31	13F	MID-AMER APT CMNTYS	COM	59522J103	176,442	148,662	535.14	27,273	517.85	0.0350
2024-11-12	2024-09-30	13F	MID-AMER APT CMNTYS	COM	59522J103	27,780	-2,713	-8.90	4,415	1.49	0.0057
2024-08-13	2024-06-30	13F	MID-AMER APT CMNTYS	COM	59522J103	30,493	-36,791	-54.68	4,349	-50.88	0.0062
2024-05-07	2024-03-31	13F	MID-AMER APT CMNTYS	COM	59522J103	67,284	-97,147	-59.08	8,853	-59.96	0.0130
2024-02-14	2023-12-31	13F	MID-AMER APT CMNTYS	COM	59522J103	164,431	-164,181	-49.96	22,109	-47.70	0.0355
2023-11-14	2023-09-30	13F	MID-AMER APT CMNTYS	COM	59522J103	328,612	5,322	1.65	42,276	-13.89	0.0760
2023-08-11	2023-06-30	13F	MID-AMER APT CMNTYS	COM	59522J103	323,290	-6,215	-1.89	49,095	-1.35	0.0856
2023-05-12	2023-03-31	13F	MID-AMER APT CMNTYS	COM	59522J103	329,505	40,746	14.11	49,769	9.79	0.0924
2023-02-10	2022-12-31	13F	MID-AMER APT CMNTYS	COM	59522J103	288,759	135,044	87.85	45,332	90.18	0.1007
2022-11-14	2022-09-30	13F	MID-AMER APT CMNTYS	COM	59522J103	153,715	54,293	54.61	23,836	37.20	0.0532
2022-08-15	2022-06-30	13F	MID-AMER APT CMNTYS	COM	59522J103	99,422	48,723	96.10	17,373	63.60	0.0375
2022-05-13	2022-03-31	13F	MID-AMER APT CMNTYS	COM	59522J103	50,699	3,544	7.52	10,619	-1.79	0.0213
2022-02-14	2021-12-31	13F	MID-AMER APT CMNTYS	COM	59522J103	47,155	1,564	3.43	10,813	27.15	0.0203
2021-11-12	2021-09-30	13F	MID-AMER APT CMNTYS	COM	59522J103	45,591	635	1.41	8,504	12.28	0.0178
2021-08-06	2021-06-30	13F	MID-AMER APT CMNTYS	COM	59522J103	44,956	-42,016	-48.31	7,574	-39.52	0.0168
2021-05-12	2021-03-31	13F	MID-AMER APT CMNTYS	COM	59522J103	86,972	17,904	25.92	12,524	42.98	0.0316
2021-02-08	2020-12-31	13F	MID-AMER APT CMNTYS	COM	59522J103	69,068	-35,690	-34.07	8,759	-27.94	0.0226
2020-12-04	2020-09-30	13F/A-1	MID-AMER APT CMNTYS	COM	59522J103	104,758	6,695	6.83	12,155	8.14	0.0352
2020-11-06	2020-09-30	13F	MID-AMER APT CMNTYS	COM	59522J103	105,265	83,544		12,214		33,904.3838
2020-08-17	2020-06-30	13F/A-1	MID-AMER APT CMNTYS	COM	59522J103	98,063	-3,293	-3.25	11,240	7.52	0.0349
2020-08-11	2020-06-30	13F	MID-AMER APT CMNTYS	COM	59522J103	85,975	-15,381		11,236		35,139.2355
2020-05-14	2020-03-31	13F	MID AMER APT CMNTYS	COM	59522J103	101,356	16,365	19.25	10,454	-6.70	0.0384
2020-02-06	2019-12-31	13F	MID AMER APT CMNTYS	COM	59522J103	84,991	10,715	14.43	11,205	15.98	0.0334
2019-11-12	2019-09-30	13F	MID AMER APT CMNTYS	COM	59522J103	74,276	-59,771	-44.59	9,661	-38.81	0.0247
2019-08-14	2019-06-30	13F	MID AMER APT CMNTYS	COM	59522J103	134,047	-23,034	-14.66	15,789	-8.09	0.0516
2019-05-15	2019-03-31	13F	MID AMER APT CMNTYS	COM	59522J103	157,081	39,411	33.49	17,178	48.64	0.0577
2019-02-13	2018-12-31	13F	MID AMER APT CMNTYS	COM	59522J103	117,670	42,711	56.98	11,557	52.95	0.0411
2018-11-08	2018-09-30	13F	MID AMER APT CMNTYS	COM	59522J103	74,959	-31,599	-29.65	7,556	-29.57	0.0274
2018-08-03	2018-06-30	13F	MID AMER APT CMNTYS	COM	59522J103	106,558	13,991	15.11	10,728	27.03	0.0365
2018-05-11	2018-03-31	13F	MID AMER APT CMNTYS	COM	59522J103	92,567	21,396	30.06	8,445	18.00	0.0324
2018-02-08	2017-12-31	13F	MID AMER APT CMNTYS	COM	59522J103	71,171	-25,315	-26.24	7,157	-30.60	0.0249
2017-11-06	2017-09-30	13F	MID AMER APT CMNTYS	COM	59522J103	96,486	-25,164	-20.69	10,313	-19.56	0.0367
2017-07-31	2017-06-30	13F	MID AMER APT CMNTYS	COM	59522J103	121,650	-11,574	-8.69	12,820	-5.42	0.0511
2017-05-05	2017-03-31	13F	MID AMER APT CMNTYS	COM	59522J103	133,224	-11,203	-7.76	13,554	-4.16	0.0594
2017-02-02	2016-12-31	13F	MID AMER APT CMNTYS	COM	59522J103	144,427	102,277	242.65	14,142	256.94	0.0685
2016-11-04	2016-09-30	13F	MID-AMER APT CMNTYS	COM	59522J103	42,150	168	0.40	3,962	-11.32	0.0201
2016-08-11	2016-06-30	13F	MID-AMER APT CMNTYS	COM	59522J103	41,982	-9,971	-19.19	4,468	-15.86	0.0268
2016-05-10	2016-03-31	13F/A-1	MID-AMER APT CMNTYS	COM	59522J103	51,953	14,682	39.39	5,310	56.91	0.0330
2016-02-03	2015-12-31	13F	MID-AMER APT CMNTYS	COM	59522J103	37,271	389	1.05	3,384	12.05	0.0206
2015-11-02	2015-09-30	13F/A-1	MID-AMER APT CMNTYS	COM	59522J103	36,882	10,120	37.81	3,020	54.95	0.0277
2015-10-30	2015-09-30	13F	DIREXION SHS ETF TR	COM	59522J103	36,882			3,021
2015-08-07	2015-06-30	13F/A-1	MID-AMER APT CMNTYS	COM	59522J103	26,762	886	3.42	1,949	-2.40	0.0176
2015-08-04	2015-06-30	13F	MID-AMER APT CMNTYS	COM	59522J103	26,762	18,146		1,949		0.0176
2015-05-14	2015-03-31	13F/A-1	MID-AMER APT CMNTYS	COM	59522J103	25,876	4,675	22.05	1,997	25.99	0.0173
2015-05-01	2015-03-31	13F	MID-AMER APT CMNTYS	COM	59522J103	25,876			1,997
2015-02-10	2014-12-31	13F	MID-AMER APT CMNTYS	COM	59522J103	21,201	21,201		1,585		0.0140

Legend

Shares: The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value: The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price: The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class: This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred

Allocation (%): The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation: The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%): The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis: The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss: This is the market value of the position as of the effective date minus the cost basis.