Vault-13

SENTI BIOSCIENCES HOLDINGS I SNTI

COM NEW · Common Stock · CUSIP 816944102

18 institutional holders
2,008,7552.0m shares reported held*
6.4% of all shares outstanding*
$2.2mreported value*

* 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: 31.1m 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 ≈ $1.10.

Biggest buyers

Nantahala Capital Management, LLC New +888,000+888.0k
VANGUARD CAPITAL MANAGEMENT LLC New +537,504+537.5k
GEODE CAPITAL MANAGEMENT, LLC New +187,065+187.1k
CITADEL ADVISORS LLC New +107,100+107.1k
VANGUARD FIDUCIARY TRUST CO New +91,193+91.2k
JANE STREET GROUP, LLC New +52,530+52.5k
Menlo Ventures Management, L.P. New +35,737+35.7k
NORTHERN TRUST CORP New +32,154+32.2k
XTX Topco Ltd New +23,610+23.6k
Virtu Financial LLC New +22,795+22.8k

Biggest sellers

None

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
Celadon Partners SPV 24 13D · may seek influence no change · filed 2026-09-11
Stated purposeThe Issuer plans to use substantially all of the proceeds from the sale of shares of Common Stock pursuant to the Equity Commitment Letter to support its business following completion of the Merger. Full filing
54.6% no change 25.7m≈ $20.6m 2026-09-11

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
202Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 2 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 0 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—2$24.4k—
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20260—0——
Q2 20260—0——
Q3 20260—0——

None reported since 1 Apr 2026.

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Nantahala Capital Management, LLC 0.03% of their portfolio NEW CANAAN, CT 888,000888.0k $976.8k $976.8k 0.03% New
2 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 537,504537.5k $591.3k $591.3k 0.00% New
3 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 187,065187.1k $205.8k $205.8k 0.00% New
4 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 107,100107.1k $117.8k $117.8k 0.00% New
5 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 91,19391.2k $100.3k $100.3k 0.00% New
6 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 52,53052.5k $57.8k $57.8k 0.00% New
7 Menlo Ventures Management, L.P. 0.01% of their portfolio MENLO PARK, CA 35,73735.7k $39.3k $39.3k 0.01% New
8 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 32,15432.2k $35.4k $35.4k 0.00% New
9 XTX Topco Ltd 0.00% of their portfolio LONDON, X0 23,61023.6k $26.0k $26.0k 0.00% New
10 Virtu Financial LLC 0.00% of their portfolio New York, NY 22,79522.8k $25.0k $25.0k 0.00% New
11 UBS Group AG 0.00% of their portfolio ZURICH, V8 14,43214.4k $15.9k $15.9k 0.00% New
12 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 7,3447.3k $8.1k $8.1k 0.00% New
13 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 4,0154.0k $4.0k $4.0k 0.00% New
14 BlackRock, Inc. 0.00% of their portfolio New York, NY 4,0044.0k $4.4k $4.4k 0.00% New
15 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 768768 $845 $845 0.00% New
16 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 334334 $367 $367 0.00% New
17 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 169169 $186 $186 0.00% New
18 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 11 $1 $1 0.00% New