CMMB

Chemomab Therapeutics Ltd Cross-source read$2.58 0.77%
Health CareCUSIP 16385C203· EOD Sep 11, 2026

Among active 13F managers last quarter, 3 added and 2 reduced; the largest holder to move was Citadel Advisors LLC (+49%). Over the last 180 days, 2 insiders sold and none bought, a net -$27K in open-market trades.

Tracked 13F holders
15
5 in Q2 2026 filings
13F value (tracked)
$619K
Smart-money readMixed
Net sellingNet buying
Funds · active managers, latest 13F
3 adding · 2 trimming
Insiders · Form 4 open-market, 180d
0 buying · 2 selling · -$27K
US House · STOCK Act, 180d
0 buying · 0 selling

The legs disagree, or only one of them leans.

Price & smart-money activity

$2.58 0.77%5Y -95.4%
$1.25$16.12$30.98$45.85$60.722021202220232024202520261533454242222
Hover for who · click for detailEnd-of-day closing prices52w $1.36 – $3.50

Who owns CMMB?

15 tracked 13F filers · ranked by shares held

15 tracked 13F filers disclose a position in CMMB as of the latest SEC 13F filings, a combined $619K in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

#FundSharesPosition valueLast moveAs ofHistory
1Citadel Advisors LLC95K
$154K
+49%
Added · +31K sh
Q2 2026
2ADAR1 Capital Management, LLC80K
$126K
Held
Q1 2026
3Kestra Private Wealth Services, LLC62K
$100K
Held
Q2 2026
4Ikarian Capital, LLC52K
$84K
Held
Q2 2026
5XTX Topco Ltd19K
$29K
−2.0%
Reduced · −384 sh
Q1 2026
6Rhumbline Advisers18K
$29K
+2.9%
Added · +510 sh
Q1 2026
7Philadelphia Investment Partners, LLC15K
$24K
+83%
Added · +7K sh
Q2 2026
8Lido Advisors, LLC14K
$23K
New
+14K sh
Q2 2026
9Susquehanna International Group, LLP13K
$21K
New
+13K sh
Q1 2026
10BNP Paribas Financial Markets8K
$13K
+3.7%
Added · +300 sh
Q1 2026
11GAMMA Investing LLC5K
$8K
−37%
Reduced · −3K sh
Q2 2026
12Morgan Stanley5K
$7K
+21%
Added · +800 sh
Q1 2026
13SBI Securities Co., Ltd.34
$55
+21%
Added · +6 sh
Q2 2026
14UBS Group AG8
$13
−100%
Reduced · −2K sh
Q1 2026
15Caitong International Asset Management Co., Ltd8
$13
Held
Q2 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is CMMB being bought or sold by institutions?

Last quarter, 3 funds added to an existing position in CMMB, while 2 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Added
3
added to an existing position
Reduced
2
reduced, still holding
Biggest moves · ranked by size of the change, positions above a floor

Funds that own CMMB also own

CompanyCo-held byTheir position there
Unitedhealth Group IncUNH7 funds$473.2M
McKesson CorpMCK7 funds$357.8M
Merck & Co. Inc.MRK7 funds$269.2M
Enliven Therapeutics IncELVN7 funds$125.9M
Bristol-Myers Squibb CoBMY7 funds$96.7M
Viking Therapeutics IncVKTX7 funds$46.1M
Maze Therapeutics IncMAZE7 funds$39.1M
Biohaven LtdBHVN7 funds$39.1M
Jade Biosciences IncJBIO7 funds$31.5M
Relmada Therapeutics IncRLMD7 funds$25.6M
Viridian Therapeutics IncVRDN7 funds$19.7M
Biocryst Pharmaceuticals IncBCRX7 funds$19.2M

Ranked by how many of CMMB's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in CMMB.

Insider activity (Form 4)

Full insider page →
Sells · 180d
$27K
2 insiders
Net · 180d
-$27K
4 open-market transactions
DateInsiderRoleActionSharesValue
Aug 28, 2026Cohen Neil HarrisDirectorSell (S)1K$3K
Aug 27, 2026Cohen Neil HarrisDirectorSell (S)1K$4K
May 29, 2026Mor George AdiChief Executive Officer, DirectorSell (P)
2 lots, same day
10K$20K
Jan 3, 2023OrbiMed Israel BioFund GP Limited Partnership10% OwnerSell (S)
2 lots, same day
337K$1.2M
Jan 3, 2023Mor George AdiChief Scientific Officer, DirectorSell (S)
2 lots, same day
14K$69K
Nov 16, 2022Mor George AdiChief Scientific Officer, DirectorSell (S)
2 lots, same day
582K$1.2M
Nov 16, 2022Cohen Neil HarrisDirectorSell (S)2K$5K
May 24, 2022Maryles Joel MichaelDirectorBuy (P)
2 lots, same day
433$1K
May 18, 2022Cohen Neil HarrisDirectorBuy (P)2K$6K
Mar 18, 2022Maryles Joel MichaelDirectorBuy (P)
2 lots, same day
1K$4K
Mar 16, 2022Marvin DonaldExecutive VP, CFO & COOBuy (P)
2 lots, same day
500$2K
Mar 14, 2022Marvin DonaldExecutive VP, CFO & COOBuy (P)
5 lots, same day
1K$5K

One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.

Do institutions, insiders and Congress agree?

Mixed signals

Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.

SEC EDGAR 13F + Form 4 + US House STOCK Act{ }get_ticker_confluence · API & MCP

Signals by source

Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive

SourceBuyingSellingNet
13F funds
Top 100 holders by value, passive included; the hero counts active managers only
63
Insiders
Form 4 open-market
02-$27K
US House
STOCK Act trades
00$0
Sector rotation
CMMB is in Health Care, which smart money is rotating OUT OF
$5.0B

Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.

Institutional ownership over time

5 tracked filers in Q2 2026 filingsstill filing
0714Q3 2025Q4 2025Q1 2026Q2 2026
tracked filers holding their reported valueQ2 2026 filings so far: $131K
Each bar counts tracked filers with a position in that quarter's filings, so the newest bar excludes filers still on an earlier quarter. Arkolith's tracked universe has grown over this window; part of any long-run rise is coverage, not new buyers.

Recent filings

15 most recent

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Connected entities for CMMB

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Ask your agent what changed in CMMB

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/CMMB/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for CMMB.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for CMMB. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.