Twist Bioscience Corporation · TWST · 5 MIN READ

Twist Bioscience Raises Capital as Insiders Sell $77M

Twist Bioscience filed equity offering prospectuses in August while its executives simultaneously sold $76.84 million in shares with zero purchases — and the stock now trades approximately 50% above t

Twist Bioscience Raises Capital as Insiders Sell $77M

When an AI deal with Eli Lilly lifted Twist Bioscience Corporation (TWST) 33% in seven sessions to a price 50% above analyst targets, CEO Emily Leproust sold $56 million in shares on a single day, exercising options originally priced as low as $8.82. The company's most recently reported quarter missed consensus earnings estimates by 211.1%.

UPDATE September 27: Twist Bioscience joined Eli Lilly's TuneLab AI platform, a deal that adds a concrete AI-driven drug discovery partnership to the investment thesis and prompted an analyst target hike that pushed TWST shares to new highs before a partial retreat. The development materially reframes the insider-selling narrative: rather than executives cashing out of a struggling synthetic biology platform, the read shifts toward insiders trimming into strength as a marquee pharma partner validates Twist's core technology. CEO Emily Leproust sold an additional 5,203 shares (~$279K) under her June 10b5-1 plan, continuing a pattern of scheduled selling that predates the Lilly announcement and carries less signal in this context. Watch for two things: whether Lilly discloses commercial terms or milestones tied to the TuneLab integration — any revenue-sharing or access-fee structure would anchor the catalyst to hard numbers — and whether Leproust's 10b5-1 activity accelerates beyond the scheduled pace, which would reopen the concern about insider conviction. Until those details surface, the partnership is a thesis-changer in direction but not yet in magnitude.
Twist Bioscience Corporation (TWST) stock analysis
Image: Basis Report
The numbers
  • Net insider sales over 90 days: $76.84 million, zero purchases; the company filed equity prospectuses in August.
  • Trailing free cash flow: negative $65 million; cash $170 million, debt $110 million; 23.0% of float sold short.
TWST 90-day price and volume, Jun 25 to Sep 21$85.47$126.23this story$165.83Jun 25Aug 7Sep 21
TWST 90-day price and volume, Jun 25 to Sep 21. Chart: Basis Report · market data at publish.

The Rally Outran the Financials

Twist Bioscience manufactures synthetic genes and gene fragments for drug discovery, diagnostics, and next-generation sequencing, serving pharma, biotech, and academic customers. Trailing revenue of roughly $430 million is growing 23% year-over-year with a 52% gross margin. The Lilly AI deal is a credible inflection for a synthetic DNA platform. At $164.60, the stock is pricing certainty the financials have not yet delivered; running a DCF calculator at current prices requires growth assumptions the quarterly track record does not support.

Every Insider Is a Seller

CEO Emily Leproust exercised options originally priced at $8.82 and $26.66 per share on September 17, then sold approximately 356,546 shares across 13 tranches at prices ranging from $151.46 to $163.39, generating $56.33 million in proceeds per Form 4 filings. President and COO Patrick Finn had already sold approximately $9.2 million worth of shares in mid-August. Total net insider sales over the 90-day period reached $76.84 million against zero purchases. The company itself simultaneously issued new equity via 424B5 prospectus supplements filed August 4 and 5, placing new public investors on the opposite side of trades its own executives were completing.

HOW TWST STACKS UP, data at publish
TickerMkt capFwd P/E52-wk
TWST$10.9Bn/a+513.7%
PACB$457Mn/a+5.4%
TXG$10.5B396.9x+533.3%
BEAM$2.7Bn/a+7.1%
CDNA$2.9B42.5x+248.9%
NTLA$1.8Bn/a-31.2%

The Bull Case Rests on One Number

With 23.0% of the float sold short and free cash flow at negative $65 million, Twist carries both a skeptical base and a cash-burn the Lilly deal alone does not resolve. The August equity offerings suggest management anticipated needing more capital at elevated prices. The thesis turns if the next quarterly print shows Lilly revenues closing the gap toward breakeven; that is the number to watch. Absent it, a stock trading 50% above analyst consensus with every insider on record as a seller is one the company's own executives have chosen to exit. Run the free Twist Bioscience Corporation deep-dive →.

Basis Report is independent research for informational purposes. It is not investment advice and not a recommendation to buy or sell any security.

Twist Bioscience filed equity offering prospectuses in August while its executives simultaneously sold $76.84 million in shares with zero purchases — and the stock now trades approximately 50% above the average Wall Street price target of $109.58 after a 33% rally attributed to an AI deal with Eli Lilly. The company's most recently reported quarter produced a 211.1% earnings miss.
ANALYSIS
TWST
Twist Bioscience Corporation
Twist Bioscience Raises Capital as Insiders Sell $77M
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