1. Corporate Officers - A
2. Anderson Karen M.

Insider Trading History of Anderson Karen M.

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) of Anderson Karen M. since 2020. This trader's CIK number is 1762176. At the time of last reporting, Anderson Karen M. was the Chief People Officer of Centessa Pharmaceuticals Plc. (stock ticker symbol CNTA). Also see all insider trading activities at Centessa Pharmaceuticals Plc.

Note that in the past Anderson Karen M. also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Mimecast Ltd (MIME) by Anderson Karen M.

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2022	MIME	0	$0	0	$0	17,298	$0
2021	MIME	0	$0	38,014	$2,251,806	44,560	$1,188,544
2020	MIME	0	$0	0	$0	8,730	$0

Yearly summary of insider trading at Centessa Pharmaceuticals Plc (CNTA) by Anderson Karen M.

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2025	CNTA	0	$0	37,426	$698,059	30,955	$124,129
2024	CNTA	0	$0	67,660	$894,402	61,500	$240,374

Insider trading activities at 2 companies by Anderson Karen M.:

1. Mimecast Ltd (MIME)

2. Centessa Pharmaceuticals Plc (CNTA)

Table 1. Insider trading of Mimecast Ltd (MIME) by Anderson Karen M.

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2022-04-01	MIME	Option Ex	8,632	.00	0
2022-02-01	MIME	Option Ex	8,666	.00	0
2021-11-01	MIME	Sale	7,812	75.82	592,282
2021-11-01	MIME	Option Ex	7,812	40.00	312,480
2021-10-01	MIME	Option Ex	1,859	33.38	62,053
2021-10-01	MIME	Sale	1,859	64.72	120,323
2021-08-10	MIME	Option Ex	17,483	36.69	641,451
2021-08-10	MIME	Sale	17,483	58.80	1,027,912
2021-06-09	MIME	Sale	4,314	51.99	224,284
2021-06-09	MIME	Option Ex	4,314	40.00	172,560
2021-04-05	MIME	Sale	2,248	40.75	91,606
2021-04-01	MIME	Option Ex	4,496	.00	0
2021-02-01	MIME	Option Ex	8,596	.00	0
2021-02-02	MIME	Sale	4,298	45.46	195,399
2020-02-01	MIME	Option Ex	4,365	.00	0
2020-02-02	MIME	Option Ex	4,365	.00	0

Table 2. Insider trading of Centessa Pharmaceuticals Plc (CNTA) by Anderson Karen M.

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2025-02-07	CNTA	Option Ex	30,526	4.01	122,409
2025-02-07	CNTA	Sale	30,526	19.03	580,787
2025-02-10	CNTA	Option Ex	429	4.01	1,720
2025-02-10	CNTA	Sale	429	18.99	8,146
2025-02-03	CNTA	Sale	6,471	16.86	109,126
2024-12-17	CNTA	Sale	10,624	17.32	184,039
2024-12-17	CNTA	Option Ex	10,624	3.85	40,902
2024-12-13	CNTA	Sale	5,876	17.01	99,974
2024-12-13	CNTA	Option Ex	5,876	3.85	22,622
2024-03-25	CNTA	Option Ex	45,000	3.93	176,850
2024-03-25	CNTA	Sale	51,160	11.93	610,389

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Anderson Karen M. (Chief People Officer of Centessa Pharmaceuticals Plc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

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