Kathryn McCarthy

Currently holds a position at SEI Investments Co

3.1

3.1

Position	Company	Period
Lead Independent Director	SEI Investments Co	Oct. 1, 1998 -

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value
2026-05-05	2026-05-04	SEI Investments Co (SEIC)	S Sale	50,423 +38.4% 189.32 US$4,608,580	50,423 +38.4%	189.32	US$4,608,580
2026-05-04	2026-05-04	SEI Investments Co (SEIC)	PrS Proposed sale	4,301 451.12 US$614,767	4,301	451.12	US$614,767
2025-09-29	2025-09-29	SEI Investments Co (SEIC)	PrS Proposed sale	59,181 247.85 US$4,278,074	59,181	247.85	US$4,278,074
2025-09-29	2025-09-29	SEI Investments Co (SEIC)	S Sale	10,000 -11.7% 85.66 US$856,600	10,000 -11.7%	85.66	US$856,600
2023-09-11	2023-09-08	SEI Investments Co (SEIC)	S Sale	10,000 -12.1% 60.58 US$605,766	10,000 -12.1%	60.58	US$605,766
2023-09-08	2023-09-08	SEI Investments Co (SEIC)	PrS Proposed sale	10,000 60.58 US$605,766	10,000	60.58	US$605,766
2022-12-22	2022-12-21	SEI Investments Co (SEIC)	S Sale	10,000 -12.2% 59.25 US$592,500	10,000 -12.2%	59.25	US$592,500
2020-12-10	2020-12-09	SEI Investments Co (SEIC)	S Sale	9,500 -11.7% 56.35 US$535,325	9,500 -11.7%	56.35	US$535,325
2019-07-30	2019-07-26	SEI Investments Co (SEIC)	S Sale	9,500 -11.8% 60.90 US$578,550	9,500 -11.8%	60.90	US$578,550