SC Filed 2021-01-12 Event — SEC 0001104659-21-003503 →

5AM Ventures V, L.P. → Cabaletta Bio, Inc. CABA

Stake: — Shares: —

Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 25/100

Passive Schedule 13G filer baseline
Held by 1 tracked 13F institutional manager
Elevated short days-to-cover (7.2 DTC)

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

14 transactions

14 buys · 0 sales · 0 awards/exercises

Issuer Cluster

5 13D/G filings on this issuer

4 other filings besides this one

Filer Track Record

5 filings by this filer

4 other filings in the data moat

Short Interest · settle 2026-10-15

DTC 7.22

39,286,951 shares short · +1.7% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers

1 holder · $124K

Point72 Asset Mgmt

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-03-02	Das Arun	officer	Award	175,000	$3.30	$578K
2026-03-02	Gerard Michael	officer	Award	175,000	$3.30	$578K
2026-03-02	Binder Gwendolyn	officer	Award	225,000	$3.30	$743K
2026-03-02	Chang David J.	officer	Award	225,000	$3.30	$743K
2026-03-02	Nichtberger Steven	director, officer	Award	674,000	$3.30	$2.22M
2026-03-02	Marda Anup	officer	Award	225,000	$3.30	$743K
2026-01-21	Chang David J.	officer	Buy	8,800	$2.26	$20K
2026-01-21	Binder Gwendolyn	officer	Buy	11,312	$2.19	$25K
2026-01-21	Tomasello Shawn	director	Buy	22,725	$2.21	$50K
2026-01-21	Gavel Steve	officer	Buy	22,170	$2.27	$50K
2026-01-21	Bollard Catherine	director	Buy	4,405	$2.27	$10K
2026-01-21	Nichtberger Steven	director, officer	Buy	45,000	$2.24	$101K
2026-01-21	Simon Mark	director	Buy	11,061	$2.28	$25K
2026-01-21	Gerard Michael	officer	Buy	6,600	$2.27	$15K

Other 13D/G Filings on Cabaletta Bio, Inc.

Filed	Form	Filer	Stake	Shares
2026-07-27	SCHEDULE 13G	BlackRock, Inc.	—	—	view →
2021-11-03	SC	5AM Ventures V, L.P.	—	—	view →
2021-09-09	SC	5AM Ventures V, L.P.	—	—	view →
2020-12-14	SC	5AM Ventures V, L.P.	—	—	view →

Other Filings by 5AM Ventures V, L.P.

Filed	Form	Issuer	Stake	Shares
2022-12-02	SC	Akouos, Inc.	—	—	view →
2021-11-03	SC	Cabaletta Bio, Inc. CABA	—	—	view →
2021-09-09	SC	Cabaletta Bio, Inc. CABA	—	—	view →
2020-12-14	SC	Cabaletta Bio, Inc. CABA	—	—	view →

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