David A. Siegel Innospec Inc. Transaction History

Two Sigma Advisers, LP

$47 Billion
Q3 2025

A detailed history of David A. Siegel (Two Sigma Advisers, LP) transactions in Innospec Inc. stock. As of the latest transaction made, Two Sigma Advisers, LP holds 158,200 shares of IOSP stock, worth $11.7 Million. This represents 0.03% of its overall portfolio holdings.

Number of Shares

158,200

Previous 80,500 96.52%

Holding current value

$11.7 Million

Previous $6.77 Million 80.32%

% of portfolio

0.03%

Previous 0.01%

25 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	BUY	$77.06 - $89.32 $5.99 Million - $6.94 Million	77,700 Added 96.52%	158,200 $12.2 Million
Q2 2025 Aug 14, 2025	BUY	$82.54 - $95.65 $3.48 Million - $4.04 Million	42,200 Added 110.18%	80,500 $6.77 Million
Q1 2025 May 15, 2025	BUY	$94.75 - $116.61 $2.67 Million - $3.29 Million	28,200 Added 279.21%	38,300 $3.63 Million
Q4 2024 Feb 14, 2025	BUY	$107.78 - $124.9 $355,674 - $412,170	3,300 Added 48.53%	10,100 $1.11 Million
Q3 2024 Nov 14, 2024	SELL	$104.8 - $131.4 $167,680 - $210,240	-1,600 Reduced 19.05%	6,800 $768,000

Q2 2024 Aug 14, 2024	BUY	$120.0 - $131.58 $780,000 - $855,270	6,500 Added 342.11%	8,400 $1.04 Million
Q1 2024 May 15, 2024	SELL	$114.8 - $129.55 $1.19 Million - $1.35 Million	-10,400 Reduced 84.55%	1,900 $244,000
Q4 2023 Feb 14, 2024	SELL	$96.36 - $125.14 $1.9 Million - $2.47 Million	-19,700 Reduced 61.56%	12,300 $1.52 Million
Q3 2023 Nov 14, 2023	SELL	$98.35 - $109.9 $1.65 Million - $1.85 Million	-16,800 Reduced 34.43%	32,000 $3.27 Million
Q2 2023 Aug 14, 2023	BUY	$92.36 - $107.19 $314,024 - $364,446	3,400 Added 7.49%	48,800 $4.9 Million
Q1 2023 May 15, 2023	BUY	$99.19 - $115.31 $3.01 Million - $3.49 Million	30,300 Added 200.66%	45,400 $4.66 Million
Q4 2022 Feb 14, 2023	BUY	$84.41 - $112.66 $329,199 - $439,374	3,900 Added 34.82%	15,100 $1.55 Million
Q3 2022 Nov 14, 2022	SELL	$85.49 - $103.11 $230,823 - $278,397	-2,700 Reduced 19.42%	11,200 $960,000
Q2 2022 Aug 15, 2022	SELL	$87.29 - $106.03 $1.35 Million - $1.64 Million	-15,500 Reduced 52.72%	13,900 $1.33 Million
Q1 2022 May 16, 2022	SELL	$89.67 - $99.68 $1.57 Million - $1.74 Million	-17,500 Reduced 37.31%	29,400 $2.72 Million
Q4 2021 Feb 14, 2022	SELL	$81.2 - $94.12 $1.73 Million - $2 Million	-21,300 Reduced 31.23%	46,900 $4.24 Million
Q3 2021 Nov 15, 2021	BUY	$82.36 - $95.69 $2.93 Million - $3.41 Million	35,600 Added 109.2%	68,200 $5.74 Million
Q2 2021 Aug 16, 2021	BUY	$90.0 - $105.95 $1.76 Million - $2.08 Million	19,600 Added 150.77%	32,600 $2.95 Million
Q1 2021 May 17, 2021	SELL	$87.79 - $105.42 $316,044 - $379,512	-3,600 Reduced 21.69%	13,000 $1.34 Million
Q4 2020 Feb 16, 2021	BUY	$62.76 - $90.73 $56,484 - $81,657	900 Added 5.73%	16,600 $1.51 Million
Q3 2020 Nov 16, 2020	SELL	$62.99 - $82.87 $497,621 - $654,673	-7,900 Reduced 33.47%	15,700 $994,000
Q2 2020 Aug 14, 2020	SELL	$64.14 - $84.46 $166,764 - $219,595	-2,600 Reduced 9.92%	23,600 $1.82 Million
Q1 2020 May 15, 2020	BUY	$61.37 - $107.16 $540,056 - $943,008	8,800 Added 50.57%	26,200 $1.82 Million
Q4 2019 Feb 14, 2020	BUY	$85.47 - $103.91 $1.03 Million - $1.26 Million	12,100 Added 228.3%	17,400 $1.8 Million
Q3 2019 Nov 14, 2019	BUY	$81.92 - $95.36 $434,176 - $505,408	5,300 New	5,300 $472,000

Others Institutions Holding IOSP

# of Institutions

283

Shares Held

24.8M

Call Options Held

150K

Put Options Held

View Full List

About INNOSPEC INC.

Ticker IOSP
Exchange NASDAQ
Sector Basic Materials
Industry Specialty Chemicals
Shares Outstandng 24,790,700
Market Cap $1.84B
Description
Innospec Inc. develops, manufactures, blends, markets, and supplies specialty chemicals in the United States, rest of North America, the United Kingdom, rest of Europe, and internationally. The company's Fuel Specialties segment offers a range of specialty chemical products that are used as additives in various fuels. This segment's products are...

More about IOSP

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