Insider · CIK 0001772518

Ridloff Elena

Reports to the SEC for 5 companies · WALTHAM, MA

sec.gov

Transactions

Companies

Filings

CIK

0001772518

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-09-17	SIONSionna Therapeutics, Inc.A Award	CFO and CBO	AAward	+47.3K sh	—	—	85,801
2026-09-17	SIONSionna Therapeutics, Inc.A Award	CFO and CBO	AAward	+47.3K sh	—	—	133,069
2026-09-17	SIONSionna Therapeutics, Inc. · Non-Qualified Stock Option (right to buy)A Award	CFO and CBO	AAward	+165K sh	—	—	165,440
2026-09-17	SIONSionna Therapeutics, Inc. · Non-Qualified Stock Option (right to buy)D Disposition to Issuer	CFO and CBO	DDisposition to Issuer	−165K sh	—	—	0
2026-08-06	IMUXIMMUNIC, INC. · Stock OptionA Award	Director	AAward	+50.7K sh	—	—	50,740
2026-06-24	KYMRKymera Therapeutics, Inc. · Stock Option (Right to Buy)A Award	Director	AAward	+6,068 sh	—	—	6,068
2026-05-11	KYMRKymera Therapeutics, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+3,000 sh	$31.20	+$93.6K	3,000
2026-05-11	KYMRKymera Therapeutics, Inc.S Sale	Director	SSale	−3,000 sh	$87.00	−$261K	0
2026-05-11	KYMRKymera Therapeutics, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director	MExercise/Conversion	−3,000 sh	—	—	13,000
2026-04-01	KYMRKymera Therapeutics, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+4,600 sh	$14.18	+$65.2K	4,600
2026-04-01	KYMRKymera Therapeutics, Inc.S Sale	Director	SSale	−3,400 sh	$85.19	−$290K	1,200
2026-04-01	KYMRKymera Therapeutics, Inc.S Sale	Director	SSale	−1,200 sh	$86.05	−$103K	0
2026-04-01	KYMRKymera Therapeutics, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director	MExercise/Conversion	−4,600 sh	—	—	0
2026-03-31	KYMRKymera Therapeutics, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+7,400 sh	$14.18	+$105K	7,400
2026-03-31	KYMRKymera Therapeutics, Inc.S Sale	Director	SSale	−7,400 sh	$85.37	−$632K	0
2026-03-31	KYMRKymera Therapeutics, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director	MExercise/Conversion	−7,400 sh	—	—	4,600
2026-01-02	SIONSionna Therapeutics, Inc. · Non-Qualified Stock Option (right to buy)A Award	CFO and CBO	AAward	+165K sh	—	—	165,440
2025-09-02	SIONSionna Therapeutics, Inc.S Sale	CFO and CBO	SSale	−8,836 sh	$25.08	−$222K	38,532
2025-08-29	SIONSionna Therapeutics, Inc.S Sale	CFO and CBO	SSale	−748 sh	$25.18	−$18.8K	47,368
2025-08-28	SIONSionna Therapeutics, Inc.S Sale	CFO and CBO	SSale	−16.1K sh	$25.97	−$418K	48,116
2025-08-27	SIONSionna Therapeutics, Inc.S Sale	CFO and CBO	SSale	−3,618 sh	$25.10	−$90.8K	64,214
2025-08-26	SIONSionna Therapeutics, Inc.S Sale	CFO and CBO	SSale	−3,700 sh	$25.13	−$93K	67,832
2025-08-20	SIONSionna Therapeutics, Inc.S Sale	CFO and CBO	SSale	−17.5K sh	$22.69	−$397K	71,532
2025-08-19	SIONSionna Therapeutics, Inc.S Sale	CFO and CBO	SSale	−34.5K sh	$21.08	−$727K	89,032
2025-06-25	KYMRKymera Therapeutics, Inc. · Stock Option (Right to Buy)A Award	Director	AAward	+16K sh	—	—	16,000
2025-06-20	Kronos Bio, Inc.U Disposition from Tender	Director	UDisposition from Tender	−25.3K sh	$0.57	−$14.4K	0
2025-06-20	Kronos Bio, Inc.Stock Option (Right to Buy)D Disposition to Issuer	Director	DDisposition to Issuer	−25.9K sh	—	—	0
2025-06-20	Kronos Bio, Inc.Stock Option (Right to Buy)D Disposition to Issuer	Director	DDisposition to Issuer	−26.9K sh	—	—	0
2025-06-20	Kronos Bio, Inc.Stock Option (Right to Buy)D Disposition to Issuer	Director	DDisposition to Issuer	−15.5K sh	—	—	0
2025-06-20	Kronos Bio, Inc.Stock Option (Right to Buy)D Disposition to Issuer	Director	DDisposition to Issuer	−34K sh	—	—	0
2025-06-20	Kronos Bio, Inc.Stock Option (Right to Buy)D Disposition to Issuer	Director	DDisposition to Issuer	−17K sh	—	—	0
2025-06-20	Kronos Bio, Inc.Stock Option (Right to Buy)D Disposition to Issuer	Director	DDisposition to Issuer	−17K sh	—	—	0
2025-06-11	KYMRKymera Therapeutics, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+4,500 sh	$20.29	+$91.3K	4,500
2025-06-11	KYMRKymera Therapeutics, Inc.S Sale	Director	SSale	−4,500 sh	$50.00	−$225K	0
2025-06-11	KYMRKymera Therapeutics, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director	MExercise/Conversion	−4,500 sh	—	—	4,500
2025-06-03	KYMRKymera Therapeutics, Inc.M Exercise/Conversion	Director	MExercise/Conversion	+12K sh	$27.67	+$332K	12,000
2025-06-03	KYMRKymera Therapeutics, Inc.S Sale	Director	SSale	−7,200 sh	$45.50	−$328K	4,800
2025-06-03	KYMRKymera Therapeutics, Inc.S Sale	Director	SSale	−4,800 sh	$47.00	−$226K	0
2025-06-03	KYMRKymera Therapeutics, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Director	MExercise/Conversion	−12K sh	—	—	0
2025-02-06	SIONSionna Therapeutics, Inc. · Stock Option (Right to Buy)A Award	CFO and CBO	AAward	+158K sh	—	—	157,820
2024-06-25	Kronos Bio, Inc.A Award	Director	AAward	+11.3K sh	—	—	25,296
2024-06-25	Kronos Bio, Inc.Stock Option (Right to Buy)A Award	Director	AAward	+17K sh	—	—	17,000
2024-06-18	KYMRKymera Therapeutics, Inc. · Stock Option (Right to Buy)A Award	Director	AAward	+16K sh	—	—	16,000
2023-06-22	Kronos Bio, Inc.A Award	Director	AAward	+11.3K sh	—	—	13,963
2023-06-22	Kronos Bio, Inc.Stock Option (Right to Buy)A Award	Director	AAward	+17K sh	—	—	17,000
2023-06-15	KYMRKymera Therapeutics, Inc. · Stock Option (Right to Buy)A Award	Director	AAward	+12K sh	—	—	12,000
2022-06-29	KYMRKymera Therapeutics, Inc. · Stock Option (Right to Buy)A Award	Director	AAward	+9,000 sh	—	—	9,000
2022-06-22	Kronos Bio, Inc.Stock Option (Right to Buy)A Award	Director	AAward	+34K sh	—	—	34,000
2022-06-15	KYMRKymera Therapeutics, Inc. · Stock Option (Right to Buy)A Award	Director	AAward	+12K sh	—	—	12,000
2021-06-22	Kronos Bio, Inc.Stock Option (Right to Buy)A Award	Director	AAward	+15.5K sh	—	—	15,450

Recent filings

Accepted (ET)
Sep 184
Ridloff Elena0001772518-26-000004
SEC(opens sec.gov)
Aug 104
Ridloff Elena0001193805-26-001069
SEC(opens sec.gov)
Jun 254
Ridloff Elena0001193125-26-283138
SEC(opens sec.gov)
May 114
Ridloff Elena0001193125-26-217041
SEC(opens sec.gov)
Apr 14
Ridloff Elena0001193125-26-138372
SEC(opens sec.gov)
Jan 64
Ridloff Elena0001772518-26-000002
SEC(opens sec.gov)
Sep 34
Ridloff Elena0002036042-25-000053
SEC(opens sec.gov)
Aug 284
Ridloff Elena0002036042-25-000050
SEC(opens sec.gov)

Companies

Address

C/O SIONNA THERAPEUTICS, INC. 21 HICKORY DRIVE, SUITE 500

WALTHAM, MA, 02451