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SEC Form 4 research

Keros Therapeutics, Inc. insider transactions

Inspect Keros Therapeutics, Inc.'s public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001664710
Reporting owners
37
Officers and directors
17
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-08-212026-08-18Tanini AnnitaS1,224$10.29Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-08-18 and its public availability date is 2026-08-21. Subtracting those calendar dates gives 3 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0002146784-26-000004 ↗SEC accession 0002081460-26-000009 ↗SEC accession 0002081359-26-000008 ↗

Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Show the table · 6 rows, 7 columns

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2026-08-212026-08-18Tanini AnnitaS1,224$10.29Not reported
2026-08-212026-08-18Cho EstherS4,485$10.29Not reported
2026-08-212026-08-18Lerner Lorena RaquelS3,568$10.29Not reported
2026-08-212026-08-18Newton Charles W.S551$10.3Not reported
2026-08-202026-08-17BIENAIME JEAN JACQUESP1,000$10.27Not reported
2026-07-182026-07-15BIENAIME JEAN JACQUESP1,000$10.61Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 20 displayed rows: Officers and directors in the directory

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OrbiMed Genesis GP LLC0001808744218
Nussbaum Ran000160980553
Rovaldi Christopher000170604014
Seehra Jasbir00017323692
Seth Alpna00017210203
GORDON CARL L0001282930152
Knowles Julius0001808365258
BIENAIME JEAN JACQUES0001221590644
Cho Esther00020814602
Farzan Nima00018082961
Kariv Tomer000156807749
Lachey Jennifer000180832247
Lazarus Alon00018082442
Lerner Lorena Raquel00020813592
Newton Charles W.00018662196
ORBIMED ADVISORS LLC00010559511,020
OrbiMed Capital GP VII LLC0001760648191
Ordonez Claudia000180829013
Regnante Keith000168206810
Tanini Annita00021467841
OrbiMed Genesis GP LLC ↗Nussbaum Ran ↗Rovaldi Christopher ↗Seehra Jasbir ↗Seth Alpna ↗GORDON CARL L ↗Knowles Julius ↗BIENAIME JEAN JACQUES ↗Cho Esther ↗Farzan Nima ↗Kariv Tomer ↗Lachey Jennifer ↗Lazarus Alon ↗Lerner Lorena Raquel ↗Newton Charles W. ↗ORBIMED ADVISORS LLC ↗OrbiMed Capital GP VII LLC ↗Ordonez Claudia ↗Regnante Keith ↗Tanini Annita ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.