Vault-13

FIBROBIOLOGICS INC FBLG

COM NEW · Common Stock · CUSIP 31573L204

16 institutional holders -1 vs Q1 2026
284,937284.9k shares reported held*
4.3% of all shares outstanding*
$269.6kreported value*
3 new 5 added 4 reduced 4 sold out net bought ≈ $60.6k (+64.3k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 6.7m as of 2026-07-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $0.95.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

01020Q2 25: 1Q3 25: 0Q4 25: 0Q1 26: 17Q2 26: 1616Q2 25Q3 25Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q2 20251
Q3 20250
Q4 20250
Q1 202617
Q2 202616

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
10010Q3 25: 0 bought or addedQ3 25: 1 cut or sold outQ3 25Q2 26: 8 bought or addedQ2 26: 8 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 202501
Q2 202688

Biggest buyers

Cascade Financial Partners, LLC Added +92,400+92.4k
Qube Research & Technologies Ltd New +24,313+24.3k
BARCLAYS PLC New +7,243+7.2k
Tower Research Capital LLC (TRC) Added +4,268+4.3k
OSAIC HOLDINGS, INC. Added +2,250+2.2k
ROYAL BANK OF CANADA Added +1,336+1.3k
GEODE CAPITAL MANAGEMENT, LLC Added +690+690
Grove Bank & Trust New +100+100

Biggest sellers

VANGUARD CAPITAL MANAGEMENT LLC Reduced -39,896-39.9k
RENAISSANCE TECHNOLOGIES LLC Sold out -15,997-16.0k
BlackRock, Inc. Reduced -6,409-6.4k
UBS Group AG Reduced -4,648-4.6k
NewEdge Advisors, LLC Sold out -845-845
Vanguard Global Advisers, LLC Sold out -536-536
WELLS FARGO & COMPANY/MN Sold out -10-10
BNP PARIBAS FINANCIAL MARKETS Reduced -2-2

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
ARMISTICE CAPITAL, LLC 13G · institution new · filed 2026-08-14 10.0% new 739.0k≈ $693.5k 2026-08-14
Khoja Hamid 13D · may seek influence new · filed 2026-09-17
Stated purposeOn September 15, 2026, the Issuer and the reporting person entered into a securities purchase agreement relating to the issuance and sale of 298,508 shares of the Issuer's common stock and accompanying warrants to purchase up to 298,508 shares of common stock in a private placement. The transaction closed on September 15, 2026. The warrants are exercisable at any time, have an exercise price of $1.55 per share, and expire on the five-year anniversary of the date of issuance. The warrants also contain standard anti-dilution adjustments to the exercise price including for stock splits, stock dividends, rights offerings and pro rata distributions. The Issuer issued the shares and warrants to the reporting person at an offering price of $1.675 per share and accompanying warrant for gross proce… Full filing
7.5% new 630.0k≈ $520.6k 2026-09-17

Fell to 5% or below in the last year: Lind Global Fund III LP (5.0%, 2026-04-09)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 1 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 1 buyingQ4 25: 0 sellingQ1 26: 4 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20251$16.8k0——
Q3 20250—0——
Q4 20251$47.6k0——
Q1 20264$72.9k0——
Q2 20260—0——
Q3 20260—0——

None reported since 1 Apr 2026.

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Cascade Financial Partners, LLC 0.01% of their portfolio SAN DIEGO, CA 108,828108.8k $103.1k $103.1k 0.01% Added +92.4k +92,400
2 Fund Evaluation Group, LLC 0.00% of their portfolio CINCINNATI, OH 51,79451.8k $49.1k $49.1k 0.00% Unchanged
3 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 30,29930.3k $28.7k $28.7k 0.00% Added +690 +690
4 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 27,76927.8k $26.3k $26.3k 0.00% Reduced -39.9k -39,896
5 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 24,31324.3k $23.0k $23.0k 0.00% New
6 BlackRock, Inc. 0.00% of their portfolio New York, NY 18,23818.2k $17.3k $17.3k 0.00% Reduced -6.4k -6,409
7 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 7,2437.2k $6.9k $6.9k 0.00% New
8 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 6,3806.4k $6.0k $6.0k 0.00% Unchanged
9 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 4,7284.7k $4.5k $4.5k 0.00% Added +4.3k +4,268
10 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 2,4042.4k $2.3k $2.3k 0.00% Added +2.2k +2,250
11 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 1,5221.5k $1.0k $1.0k 0.00% Added +1.3k +1,336
12 UBS Group AG 0.00% of their portfolio ZURICH, V8 1,0731.1k $1.0k $1.0k 0.00% Reduced -4.6k -4,648
13 ISLAY CAPITAL MANAGEMENT, LLC 0.00% of their portfolio Lubbock, TX 169169 $160 $160 0.00% Unchanged
14 Grove Bank & Trust 0.00% of their portfolio Miami, FL 100100 $95 $95 0.00% New
15 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 6464 $61 $61 0.00% Reduced -2 -2
16 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 1313 $13 $13 0.00% Unchanged