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United States Biotechnology & Medical Research

Cabaletta Bio Inc (CABA)

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The most recent insider trading activity occurred on January 21, 2026, with multiple executives, including the President & CEO, Chief Commercial Officer, and Chief Medical Officer, making significant share purchases. These transactions represent a notable period of buying by company leadership.
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Ticker: CABA Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Simon Mark
1 purchase — total 25,261 USD
Buy 21 Jan 2026
Value US$463,524.60 | Price 31.09 | Shares 31,698
Buy 21 Jan 2026
Value US$3,373,799.81 | Price 333.54 | Shares 61,573
Buy 21 Jan 2026
Value US$24,763.10 | Price 2.19 | Shares 11,312
Buy 21 Jan 2026
Value US$14,979.36 | Price 2.27 | Shares 6,600
Buy 21 Jan 2026
Value US$50,215.05 | Price 2.27 | Shares 22,170
Buy 21 Jan 2026
Value US$50,322.24 | Price 2.21 | Shares 22,725
Buy 21 Jan 2026
Value US$100,777.50 | Price 2.24 | Shares 45,000
Buy 21 Jan 2026
Value US$9,982.17 | Price 2.27 | Shares 4,405
Planned sale 19 Jan 2024
Value US$14,228.62 | Price 20.33 | Shares 700
Planned sale 19 Jan 2024
Value US$201,210.50 | Price 19.54 | Shares 10,300
Planned sale 19 Dec 2023
Value US$69,593.35 | Price 22.22 | Shares 3,132
Planned sale 19 Dec 2023
Value US$171,195.88 | Price 21.76 | Shares 7,868
Planned sale 20 Nov 2023
Value US$134,405.09 | Price 18.02 | Shares 7,458
Planned sale 20 Nov 2023
Value US$61,608.49 | Price 17.39 | Shares 3,542
Proposed sale 20 Nov 2023
Value US$592,680.00 | Price 17.96 | Shares 33,000
Proposed sale 19 Oct 2023
Value US$148,005.00 | Price 13.46 | Shares 11,000
Planned sale 19 Oct 2023
Value US$5,824.61 | Price 14.28 | Shares 408
Planned sale 19 Oct 2023
Value US$141,096.03 | Price 13.32 | Shares 10,592
Planned sale 19 Sep 2023
Value US$12,950.00 | Price 18.50 | Shares 700
Planned sale 19 Sep 2023
Value US$180,269.57 | Price 17.50 | Shares 10,300
Proposed sale 19 Sep 2023
Value US$205,150.00 | Price 18.65 | Shares 11,000
Planned sale 21 Aug 2023
Value US$4,146.99 | Price 13.82 | Shares 300
Planned sale 21 Aug 2023
Value US$143,435.64 | Price 13.41 | Shares 10,700
Proposed sale 21 Aug 2023
Value US$139,480.00 | Price 12.68 | Shares 11,000
Proposed sale 19 Jul 2023
Value US$153,780.00 | Price 13.98 | Shares 11,000
Planned sale 19 Jul 2023
Value US$40,143.03 | Price 14.26 | Shares 2,815
Planned sale 19 Jul 2023
Value US$111,879.13 | Price 13.67 | Shares 8,185
Planned sale 20 Jun 2023
Value US$142,925.20 | Price 12.99 | Shares 11,000
Proposed sale 20 Jun 2023
Value US$144,320.00 | Price 13.12 | Shares 11,000
Proposed sale 20 Jun 2023
Value US$144,320.00 | Price 13.12 | Shares 11,000
Proposed sale 19 May 2023
Value US$270,600.00 | Price 12.30 | Shares 22,000
Planned sale 19 May 2023
Value US$259,833.20 | Price 11.81 | Shares 22,000
Buy 19 Oct 2022
Value US$10,152.25 | Price 1.25 | Shares 8,127
Buy 18 Oct 2022
Value US$6,834.80 | Price 0.98 | Shares 7,000
Buy 18 Oct 2022
Value US$115,286.00 | Price 0.98 | Shares 118,000
Buy 18 Oct 2022
Value US$993.50 | Price 0.99 | Shares 1,000
Buy 18 Oct 2022
Value US$19,894.00 | Price 0.99 | Shares 20,000
Buy 18 Oct 2022
Value US$49,620.00 | Price 0.99 | Shares 50,000
Buy 18 Oct 2022
Value US$141,007.57 | Price 0.99 | Shares 141,873
Sale 1 Nov 2021
Value US$475,072.00 | Price 13.00 | Shares 36,544
Sale 1 Nov 2021
Value US$3,359,928.00 | Price 13.00 | Shares 258,456
Sale 12 Jan 2021
Value US$136,890.00 | Price 13.00 | Shares 10,530
Sale 12 Jan 2021
Value US$968,110.00 | Price 13.00 | Shares 74,470
Sale 8 Jan 2021
Value US$486,343.00 | Price 13.00 | Shares 37,411
Sale 8 Jan 2021
Value US$3,439,657.00 | Price 13.00 | Shares 264,589
Sale 10 Dec 2020
Value US$544,511.00 | Price 14.75 | Shares 36,916
Sale 10 Dec 2020
Value US$3,850,989.00 | Price 14.75 | Shares 261,084
Buy 29 Oct 2019
Value US$4,999,995.00 | Price 11.00 | Shares 454,545
Buy 29 Oct 2019
Value US$7,700,000.00 | Price 11.00 | Shares 700,000
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-01-21 2026-01-21 B Purchase
4.0
Simon Mark
Non-Executive Director
31,698 +34.7%
31.09
US$463,525 		31,698 +34.7% 31.09 US$463,525
2026-01-21 2026-01-21 B Purchase
3.3
Chang David J.

Chief Medical Officer

Officer
61,573 +0.6%
333.54
US$3,373,800 		61,573 +0.6% 333.54 US$3,373,800
2026-01-21 2026-01-21 B Purchase
4.0
Binder Gwendolyn

President, Science & Tech.

Officer
36,097 -42.5%
315.77
US$963,707 		36,097 -42.5% 315.77 US$963,707
2026-01-21 2026-01-21 B Purchase
3.3
Gerard Michael

General Counsel

Officer
6,600 +inf%
2.27
US$14,979 		6,600 +inf% 2.27 US$14,979
2026-01-21 2026-01-21 B Purchase
3.3
Gavel Steve

Chief Commercial Officer

Officer
22,170 +inf%
2.27
US$50,215 		22,170 +inf% 2.27 US$50,215
2026-01-21 2026-01-21 B Purchase
3.7
Tomasello Shawn
Non-Executive Director
22,725 +inf%
2.21
US$50,322 		22,725 +inf% 2.21 US$50,322
2026-01-21 2026-01-21 B Purchase
4.0
Nichtberger Steven

President & CEO

Executive Director
45,000 +4.6%
2.24
US$100,778 		45,000 +4.6% 2.24 US$100,778
2026-01-21 2026-01-21 B Purchase
4.0
Bollard Catherine
Non-Executive Director
4,405 +440.5%
2.27
US$9,982 		4,405 +440.5% 2.27 US$9,982
2024-01-19 2024-01-19 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
700 -3.4%
20.33
US$14,229 		700 -3.4% 20.33 US$14,229
2024-01-19 2024-01-19 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
10,300 -33.2%
19.54
US$201,210 		10,300 -33.2% 19.54 US$201,210
2023-12-19 2023-12-19 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
3,132 -13.5%
22.22
US$69,593 		3,132 -13.5% 22.22 US$69,593
2023-12-19 2023-12-19 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
7,868 -25.4%
21.76
US$171,196 		7,868 -25.4% 21.76 US$171,196
2023-11-21 2023-11-20 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
7,458 -27.2%
18.02
US$134,405 		7,458 -27.2% 18.02 US$134,405
2023-11-21 2023-11-20 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
3,542 -11.4%
17.39
US$61,608 		3,542 -11.4% 17.39 US$61,608
2023-11-20 2023-11-20 PrS Proposed sale
4.0
GWENDOLYN BINDER

Officer

Officer
33,000
17.96
US$592,680 		33,000 17.96 US$592,680
2023-10-19 2023-10-19 PrS Proposed sale
4.0
GWENDOLYN BINDER

Officer

Officer
11,000
13.46
US$148,005 		11,000 13.46 US$148,005
2023-10-19 2023-10-19 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
408 -2.0%
14.28
US$5,825 		408 -2.0% 14.28 US$5,825
2023-10-19 2023-10-19 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
10,592 -34.2%
13.32
US$141,096 		10,592 -34.2% 13.32 US$141,096
2023-09-20 2023-09-19 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
700 -3.4%
18.50
US$12,950 		700 -3.4% 18.50 US$12,950
2023-09-20 2023-09-19 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
10,300 -33.2%
17.50
US$180,270 		10,300 -33.2% 17.50 US$180,270
2023-09-19 2023-09-19 PrS Proposed sale
4.0
GWENDOLYN BINDER

Officer

Officer
11,000
18.65
US$205,150 		11,000 18.65 US$205,150
2023-08-22 2023-08-21 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
300 -1.5%
13.82
US$4,147 		300 -1.5% 13.82 US$4,147
2023-08-22 2023-08-21 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
10,700 -34.5%
13.41
US$143,436 		10,700 -34.5% 13.41 US$143,436
2023-08-21 2023-08-21 PrS Proposed sale
4.0
GWENDOLYN BINDER

Officer

Officer
11,000
12.68
US$139,480 		11,000 12.68 US$139,480
2023-07-19 2023-07-19 PrS Proposed sale
4.0
GWENDOLYN BINDER

Officer

Officer
11,000
13.98
US$153,780 		11,000 13.98 US$153,780
2023-07-19 2023-07-19 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
2,815 -12.3%
14.26
US$40,143 		2,815 -12.3% 14.26 US$40,143
2023-07-19 2023-07-19 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
8,185 -26.4%
13.67
US$111,879 		8,185 -26.4% 13.67 US$111,879
2023-06-21 2023-06-20 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
11,000 -35.5%
12.99
US$142,925 		11,000 -35.5% 12.99 US$142,925
2023-06-20 2023-06-20 PrS Proposed sale
4.0
GWENDOLYN BINDER

Officer

Officer
11,000
13.12
US$144,320 		11,000 13.12 US$144,320
2023-06-20 2023-06-20 PrS Proposed sale
4.0
GWENDOLYN BINDER

Officer

Officer
11,000
13.12
US$144,320 		11,000 13.12 US$144,320
2023-05-19 2023-05-19 PrS Proposed sale
4.0
GWENDOLYN BINDER

Officer

Officer
22,000
12.30
US$270,600 		22,000 12.30 US$270,600
2023-05-19 2023-05-19 PlS Planned sale
4.0
Binder Gwendolyn

See Remarks

Officer
22,000 -52.4%
11.81
US$259,833 		22,000 -52.4% 11.81 US$259,833
2022-10-19 2022-10-19 B Purchase
4.0
Nichtberger Steven

President & CEO

Executive Director
8,127 +0.8%
1.25
US$10,152 		8,127 +0.8% 1.25 US$10,152
2022-10-18 2022-10-18 B Purchase
4.0
Simon Mark
Non-Executive Director
7,000 +inf%
0.98
US$6,835 		7,000 +inf% 0.98 US$6,835
2022-10-18 2022-10-18 B Purchase
4.0
Simon Mark
Non-Executive Director
118,000 +650.4%
0.98
US$115,286 		118,000 +650.4% 0.98 US$115,286
2022-10-18 2022-10-18 B Purchase
4.0
Bollard Catherine
Non-Executive Director
1,000 +inf%
0.99
US$994 		1,000 +inf% 0.99 US$994
2022-10-18 2022-10-18 B Purchase
4.0
Binder Gwendolyn

See Remarks

Officer
20,000 +inf%
0.99
US$19,894 		20,000 +inf% 0.99 US$19,894
2022-10-18 2022-10-18 B Purchase
3.4
Marda Anup

Chief Financial Officer

Officer
50,000 +inf%
0.99
US$49,620 		50,000 +inf% 0.99 US$49,620
2022-10-18 2022-10-18 B Purchase
4.0
Nichtberger Steven

President & CEO

Executive Director
141,873 +17.0%
0.99
US$141,008 		141,873 +17.0% 0.99 US$141,008
2021-11-03 2021-11-01 S Sale
3.5
5AM Ventures V, L.P.
Large shareholder
36,544 -9.9%
13.00
US$475,072 		36,544 -9.9% 13.00 US$475,072
2021-11-03 2021-11-01 S Sale
3.5
5AM Ventures V, L.P.
Large shareholder
258,456 -13.0%
13.00
US$3,359,928 		258,456 -13.0% 13.00 US$3,359,928
2021-01-12 2021-01-12 S Sale
3.5
5AM Ventures V, L.P.
Large shareholder
10,530 -2.8%
13.00
US$136,890 		10,530 -2.8% 13.00 US$136,890
2021-01-12 2021-01-12 S Sale
3.5
5AM Ventures V, L.P.
Large shareholder
74,470 -2.8%
13.00
US$968,110 		74,470 -2.8% 13.00 US$968,110
2021-01-12 2021-01-08 S Sale
3.5
5AM Ventures V, L.P.
Large shareholder
37,411 -9.0%
13.00
US$486,343 		37,411 -9.0% 13.00 US$486,343
2021-01-12 2021-01-08 S Sale
3.5
5AM Ventures V, L.P.
Large shareholder
264,589 -9.0%
13.00
US$3,439,657 		264,589 -9.0% 13.00 US$3,439,657
2020-12-14 2020-12-10 S Sale
3.5
5AM Ventures V, L.P.
Large shareholder
36,916 -8.1%
14.75
US$544,511 		36,916 -8.1% 14.75 US$544,511
2020-12-14 2020-12-10 S Sale
3.5
5AM Ventures V, L.P.
Large shareholder
261,084 -8.1%
14.75
US$3,850,989 		261,084 -8.1% 14.75 US$3,850,989
2019-10-31 2019-10-29 B Purchase
3.5
5AM Ventures V, L.P.
Large shareholder
454,545 +inf%
11.00
US$4,999,995 		454,545 +inf% 11.00 US$4,999,995
2019-10-30 2019-10-29 B Purchase
2.8
Flynn James E
Large shareholder
700,000 +inf%
11.00
US$7,700,000 		700,000 +inf% 11.00 US$7,700,000
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