Porter Derrell

• 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
2026-06-17	2026-06-17	Acumen Pharmaceuticals Inc (ABOS)	S Sale	67,582 +9.0% 55.94 US$279,699	67,582 +9.0%	55.94	US$279,699
2026-06-17	2026-06-17	Acumen Pharmaceuticals Inc (ABOS)	PrS Proposed sale	29,760 205.27 US$2,461,263	29,760	205.27	US$2,461,263
2026-06-17	2026-06-16	Acumen Pharmaceuticals Inc (ABOS)	S Sale	45,821 +5.7% 217.76 US$1,537,833	45,821 +5.7%	217.76	US$1,537,833
2026-06-16	2026-06-16	Acumen Pharmaceuticals Inc (ABOS)	PrS Proposed sale	12,800 2.33 US$29,768	12,800	2.33	US$29,768
2026-06-17	2026-06-15	Acumen Pharmaceuticals Inc (ABOS)	S Sale	6,460 -11.8% 2.35 US$15,149	6,460 -11.8%	2.35	US$15,149
2026-06-15	2026-06-15	Acumen Pharmaceuticals Inc (ABOS)	PrS Proposed sale	6,460 2.35 US$15,149	6,460	2.35	US$15,149
2019-02-19	2019-02-15	Atara Biotherapeutics Inc (ATRA)	PlS Planned sale	5,909 -21.4% 40.00 US$236,360	5,909 -21.4%	40.00	US$236,360