Stocks
XLO Xilio Therapeutics, Inc.

XLO

Xilio Therapeutics, Inc.

Company with tickers: XLO

CIK

1840233

CUSIP

98422T100

Shares Outstanding

5,782,511

Price Holdings Short Volume Short Interest Fails to Deliver SEC Filings Earnings Calls Insider Trading Congress Trades

Date	Insider	Role	Type	Shares	Price	Value	After
2026-03-26	Shannon James Samuel	Director	Buy	5,000	$8.79	$43,950	10,000
2026-01-02	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Sell	1,826	$0.64	$1,174	6,371
2026-01-02	Frankenfield Christopher James	Chief Financial Officer	Sell	7,030	$0.64	$4,522	24,766
2026-01-01	Luptakova Katarina	CHIEF MEDICAL OFFICER	Convert	16,625	—	—	33,250
2026-01-01	Luptakova Katarina	CHIEF MEDICAL OFFICER	Convert	16,625	—	—	33,250
2026-01-01	Russo Rene	Director	Convert	44,250	—	—	88,500
2026-01-01	Russo Rene	Director	Convert	44,250	—	—	325,422
2026-01-01	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Convert	5,000	—	—	8,197
2026-01-01	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Convert	5,000	—	—	10,000
2026-01-01	Frankenfield Christopher James	Chief Financial Officer	Convert	19,375	—	—	38,750
2026-01-01	Frankenfield Christopher James	Chief Financial Officer	Convert	19,375	—	—	31,796
2025-12-31	Luptakova Katarina	CHIEF MEDICAL OFFICER	Award	451,885	—	—	451,885
2025-12-31	Russo Rene	Director	Award	1,500,258	—	—	1,500,258
2025-12-31	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Award	95,221	—	—	95,221
2025-12-31	Frankenfield Christopher James	Chief Financial Officer	Award	668,789	—	—	668,789
2025-11-21	Frankenfield Christopher James	Chief Financial Officer	Other	155,090	—	—	0
2025-11-21	Frankenfield Christopher James	Chief Financial Officer	Award	925,000	—	—	925,000
2025-11-21	Russo Rene	Director	Other	239,703	—	—	0
2025-11-21	Russo Rene	Director	Award	2,075,000	—	—	2,075,000
2025-11-21	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Other	55,000	—	—	0
2025-11-21	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Award	131,700	—	—	131,700
2025-11-21	Luptakova Katarina	CHIEF MEDICAL OFFICER	Award	625,000	—	—	625,000
2025-11-21	Luptakova Katarina	CHIEF MEDICAL OFFICER	Other	44,210	—	—	0
2025-06-17	Shannon James Samuel	Director	Buy	25,000	$0.69	$17,215	70,000
2025-06-16	Russo Rene	Director	Buy	36,289	$0.68	$24,680	281,172
2025-06-16	Shannon James Samuel	Director	Buy	45,000	$0.69	$30,870	45,000
2025-06-11	ROSS ROBERT W.	Director	Award	31,000	—	—	31,000
2025-06-11	Brennan Aoife	Director, President and CEO	Award	31,000	—	—	31,000
2025-06-11	Bonstein Sara	Chief Financial Officer	Award	31,000	—	—	31,000
2025-06-11	Clancy Paul J	Director	Award	31,000	—	—	31,000
2025-06-11	Curran Daniel J.	Director	Award	31,000	—	—	31,000
2025-06-11	Xu Yuan	Director	Award	31,000	—	—	31,000
2025-06-11	Shannon James Samuel	Director	Award	31,000	—	—	31,000
2025-06-11	Rossi Christina	Director	Award	31,000	—	—	31,000
2025-06-10	Bello Akintunde Olatokumbo	Director	Award	62,000	—	—	62,000
2025-06-10	Bello Akintunde Olatokumbo	Director	Other	0	—	—	0
2025-04-15	Frankenfield Christopher James	Chief Financial Officer	Award	75,000	—	—	75,000
2025-04-15	Russo Rene	Director	Award	190,000	—	—	190,000
2025-01-02	Frankenfield Christopher James	Chief Financial Officer	Sell	6,954	$0.98	$6,841	12,421
2025-01-02	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Sell	1,803	$0.98	$1,774	3,197
2025-01-01	Luptakova Katarina	CHIEF MEDICAL OFFICER	Convert	16,625	—	—	16,625
2025-01-01	Luptakova Katarina	CHIEF MEDICAL OFFICER	Convert	16,625	—	—	49,875
2025-01-01	Luptakova Katarina	CHIEF MEDICAL OFFICER	Award	200,000	—	—	200,000
2025-01-01	Frankenfield Christopher James	Chief Financial Officer	Convert	19,375	—	—	58,125
2025-01-01	Frankenfield Christopher James	Chief Financial Officer	Convert	19,375	—	—	19,375
2025-01-01	Frankenfield Christopher James	Chief Financial Officer	Award	251,000	—	—	251,000
2025-01-01	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Award	60,000	—	—	60,000
2025-01-01	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Convert	5,000	—	—	5,000
2025-01-01	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Convert	5,000	—	—	15,000
2025-01-01	Russo Rene	Director	Convert	44,250	—	—	244,883
2025-01-01	Russo Rene	Director	Award	638,000	—	—	638,000
2025-01-01	Russo Rene	Director	Convert	44,250	—	—	132,750
2024-10-01	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Award	26,000	—	—	26,000
2024-08-03	Frankenfield Christopher James	Chief Financial Officer	Award	52,000	—	—	52,000
2024-06-14	Xu Yuan	Director	Award	25,000	—	—	25,000
2024-06-14	Bonstein Sara	Chief Financial Officer	Award	25,000	—	—	25,000
2024-06-14	ROSS ROBERT W.	Director	Award	25,000	—	—	25,000
2024-06-14	Rossi Christina	Director	Award	25,000	—	—	25,000
2024-06-14	Clancy Paul J	Director	Award	25,000	—	—	25,000
2024-06-14	Curran Daniel J.	Director	Award	25,000	—	—	25,000
2024-06-13	Shannon James Samuel	Director	Award	50,000	—	—	50,000
2024-06-13	Brennan Aoife	Director, President and CEO	Award	50,000	—	—	50,000
2024-06-13	Shannon James Samuel	Director	Other	0	—	—	0
2024-06-13	Brennan Aoife	Director, President and CEO	Other	0	—	—	0
2024-06-07	Chudnovsky Yekaterina	Director, 10% Owner	Other	7,000,000	—	—	7,000,000
2024-05-01	Luptakova Katarina	CHIEF MEDICAL OFFICER	Award	59,333	—	—	59,333
2024-05-01	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Award	20,000	—	—	20,000
2024-05-01	Frankenfield Christopher James	Chief Financial Officer	Award	208,000	—	—	208,000
2024-05-01	Russo Rene	Director	Award	474,000	—	—	474,000
2024-02-08	Atlas Venture Fund XI, L.P.	10% Owner	Sell	733	$0.64	$469	2,019,563
2024-01-12	Atlas Venture Fund XI, L.P.	10% Owner	Sell	1,540	$0.83	$1,278	2,020,296
2024-01-11	Atlas Venture Fund XI, L.P.	10% Owner	Sell	1,566	$0.87	$1,362	2,021,836
2024-01-01	Frankenfield Christopher James	Chief Financial Officer	Award	77,500	—	—	77,500
2024-01-01	Luptakova Katarina	CHIEF MEDICAL OFFICER	Award	66,500	—	—	66,500
2024-01-01	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Award	20,000	—	—	20,000
2024-01-01	Russo Rene	Director	Award	177,000	—	—	177,000
2023-09-05	Luptakova Katarina	CHIEF MEDICAL OFFICER	Award	106,000	—	—	106,000
2023-09-05	Luptakova Katarina	CHIEF MEDICAL OFFICER	Other	0	—	—	0
2023-08-16	Russo Rene	Director	Award	700,000	—	—	700,000
2023-08-16	Frankenfield Christopher James	Chief Financial Officer	Award	300,000	—	—	300,000
2023-08-16	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Award	25,000	—	—	25,000
2023-08-16	Huber Martin H. Jr.	Director	Award	136,500	—	—	136,500
2023-08-03	Frankenfield Christopher James	Chief Financial Officer	Award	150,000	—	—	150,000
2023-08-03	Frankenfield Christopher James	Chief Financial Officer	Other	0	—	—	0
2023-06-12	Bonstein Sara	Chief Financial Officer	Award	13,200	—	—	13,200
2023-06-12	Rossi Christina	Director	Award	13,200	—	—	13,200
2023-06-12	Clancy Paul J	Director	Award	13,200	—	—	13,200
2023-06-12	ROSS ROBERT W.	Director	Award	13,200	—	—	13,200
2023-06-12	Heyman Tomas J.	Director	Award	13,200	—	—	13,200
2023-06-12	Xu Yuan	Director	Award	13,200	—	—	13,200
2023-04-01	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Award	55,000	—	—	55,000
2023-03-30	Brennan Kevin M.	SVP, FINANCE AND ACCOUNTING	Other	0	—	—	0
2023-01-01	Russo Rene	Director	Award	350,000	—	—	350,000
2023-01-01	Huber Martin H. Jr.	Director	Award	136,500	—	—	136,500
2023-01-01	English Edward C	PRINCIPAL ACCOUNTING OFFICER	Award	24,000	—	—	24,000
2022-11-09	English Edward C	PRINCIPAL ACCOUNTING OFFICER	Other	0	—	—	0
2022-11-09	English Edward C	PRINCIPAL ACCOUNTING OFFICER	Other	6,002	—	—	6,002
2022-09-15	Heyman Tomas J.	Director	Award	26,400	—	—	26,400
2022-09-15	Heyman Tomas J.	Director	Other	0	—	—	0
2022-06-15	Huber Martin H. Jr.	Director	Award	20,000	—	—	20,000